WO2005025427A1

WO2005025427A1 - Improved tissue recovery bag

Info

Publication number: WO2005025427A1
Application number: PCT/CN2004/001048
Authority: WO
Inventors: Xing Zhou; Yanfang Li; Siquan Wang; Aijun Guo
Original assignee: Xing Zhou
Priority date: 2003-09-16
Filing date: 2004-09-16
Publication date: 2005-03-24
Also published as: CN1237942C; CN1524503A

Abstract

The invention provides a recovery bag for the removal of anatomical organ in the patient body. The recovery bag according to the invention comprises: a recovery bag (1) and an open-close wire (2). The recovery bag (1) is formed with a soft wall (1-1), an open end (1-2), and a blind end (1-3). The recovery bag (1) can receive body organ in it. The open-close wire (2) is made from a shape memory effect metal, and it has a segment which is matching to the open end (1-2) of the recovery bag (1). The open end (1-2) of the recovery bag (1) connects to the segment of the open-close wire (2). The open-close wire (2) connected with the open end (1-2) of the recovery bag (1) can open the open end (1-2) when the recovery bag (1) is released, and can close open end (1-2) when the recovery bag (1) is retrieved.

Description

Improved biological tissue recycling bag

Technical field

The present invention relates to a surgical instrument used for recovering biological tissue, particularly a recovery bag for recovering resected biological tissue under an endoscope.

Background technique

Endoscopic surgery is a minimally invasive operation performed through a small incision. This surgical method reduces or eliminates large incisions, making large open surgical operations similar to cholecystectomy and uterine fibroid resection into simple outpatient surgery. The recovery period of patients has been shortened from several weeks to several days, and thus has become more and more widely used.

However, when performing such surgery, if the surgically removed biological tissue is too large to be removed through a small incision, the incision must be enlarged and these biological tissues removed, which greatly reduces the superiority of endoscopic surgery; another method Yes, large surgical tissue is used to divide the resected large biological tissue into small pieces of tissue suitable for removal through small incisions. However, when this method is used, fragments of tissue or fluid may be left in the body, especially When removing fluid-filled tissues such as the gallbladder, cysts, and inflamed appendixes or malignant tumor tissues, it is easy to cause infection, cause complications, or cause cancerous tissues to spread, endangering healthy tissues and life.

In order to solve the technical problem of restricting the development of endoscopic surgery by safely removing the resected large biological tissue through a small incision, various recovery bags for recovering resected biological tissue under endoscope have been developed at home and abroad. The prior art recovery bag is a flexible bag-like structure with one end open and the other end closed, and the resected biological tissue can be contained therein. B) U.S. Patent No. 5,465,731 by ell et al _; KA) U.S. Patent No. 5,480,404 by mmerer et al. And U.S. Patent No. 5,647,372 by Tovey et al. And U.S. Patent No. 5,971,995 and Chinese patent ZL0215153.3 by SP Kanglun et al., Disclosed in these patents that an open end of a recovery bag is first opened with an expansion spring and then incorporated into the resected biological tissue. After the biological tissue is incorporated, The recovery switch of the expansion spring is activated, the expansion spring is separated from the recovery bag, the open end is closed with a recovery lasso on the open end of the recovery bag, and the recovery bag is taken out of the body. These products have been widely used in clinical practice. These different patents have been improved in different technical problems, such as preventing accidental separation of the opening spring from the opening of the recovery bag and avoiding wrinkles when the lasso closes the open end, and have obtained different patents. The core of these patented technical solutions is the use of two key components, namely the expansion spring and the sealing lasso; the open end of the recovery bag is opened with the expansion spring, and the recovery spring is withdrawn to separate the recovery bag from the expansion spring. The lasso is sealed, and the recovery bag is taken out of the body. This basic technical solution is consistent in these patents. These recovery bags are complicated in structure, tedious to operate, expensive, and difficult for ordinary patients to accept. For this, gold In Chinese patent ZL01245792.2, Haiming proposed a utility model patent that uses an airbag to open the open end of the recovery bag and closes the open end of the recovery bag with a recovery lasso and removes it from the body. When tissue is incorporated into the recovery bag, sometimes the open end of the recovery bag needs to be clamped with surgical instruments. The use of an airbag device may cause air leakage or explosion of the airbag, which has a greater hidden danger. Liu Fengru in Chinese patent ZL01232360.8 proposed a simple structure of a recycling bag with a flexible recycling cable installed at the mouth of a flexible plastic recycling bag. Since the open end of this recycling bag has no expansion spring or similar function, For instruments, the bag opening of the recovery bag cannot be opened automatically. You need to open the bag opening with a surgical instrument under an endoscope, and then load the resected biological tissue into the recovery bag. When the biological tissue is incorporated, it is more troublesome to operate and prolongs the operation time.

In order to overcome the above-mentioned shortcomings of the prior art, the prior art needs to be improved to provide a recycling bag with a simpler structure, simpler operation, safer and more effective. At present, no known biological tissue recycling bag can achieve this. Claim.

Summary of the invention

The invention provides a recovery bag for recovering resected biological tissue from a patient. The core technology of the recovery bag is to install an opening and recovery line on the open end of the recovery bag. When it is released, it plays the role of opening the open end of the recycling bag, and it also plays the role of sealing when the recycling bag is recycled.

The improved biological tissue recovery bag of the present invention includes a recovery bag and an opening and recovery line. The recovery bag is composed of a flexible wall, an open end, and a closed end. The recovery bag can receive biological tissue;

A) The opening and recycling lines contain a segment that matches the shape of the open end of the recycling bag;

B) The open end of the recycling bag is connected to the line of the opening and recycling line that matches the shape of the open end of the recycling bag.

——The above-mentioned opening and recycling lines can be made of shape memory alloy wire or shape memory alloy sheet, or alloy spring steel, or other shapes that can be stored and deformed. When released, they can return to the original or close to Made of any material in its original shape.

——The open end of the recycling bag is connected to the line segment that matches the shape of the open end of the recycling bag on the opening and recycling line. It can be a sliding connection or a fixed connection, such as:

A. The opening and recycling line can slide in the slot at the open end of the recycling bag;

B. A section of the opening and recycling line is fixed to the slot at the open end of the recycling bag and cannot be moved. The other part of the opening and recycling line can slide in the slot at the open end of the recycling bag; C. The open end of the recycling bag can be bonded to the opening and recycling line by chemical adhesive;

D. The open end of the recycling bag can be inlaid on the opening and recycling line.

——The flexible wall of the recycling bag can be made of flexible rhenium molecular materials, or can be made of metal mesh or synthetic fiber-reinforced flexible polymer materials, such as silicone rubber, polyurethane, polyethylene, polypropylene, and silicon. Manufactured from elastomers or polymer materials such as resin, vinyl resin or polytetrafluoroethylene; silicon rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin reinforced by memory alloy fiber web or synthetic fiber web can also be used Or polytetrafluoroethylene or other elastomer or polymer materials.

——The above-mentioned opening and recovery wires can be connected to the distal end of the inner sheath, and installed before the distal end of the inner sheath and inside the distal end of the outer sheath.

——The relative position of the inner sheath and outer sheath can be fixed by the positioning knob.

——The above-mentioned opening and recovery lines can be released from the distal end of the inner sheath and directly lead to the outside of the body; or closed loops can be formed or removed in vivo through surgical knots using surgical instruments.

——The open end of the recovery bag can be painted with a color that is significantly different from the biological tissue observed under the endoscope.

——The above-mentioned opening and recovery line and the radial plane of the inner sheath are arc-shaped with a certain bending arc.

—— One end of the open and recovery line may have a knot, and the other end passes through the slot at the open end of the recovery bag, and then passes through the knot to form a lasso structure.

In the present invention, since an open and recovery line is installed at the open end of the recovery bag, the open and recovery line can both function to open the open end of the recovery bag when the recovery bag is released, and can also function as a seal when the recovery bag is recovered. Function, simple structure, easy operation, safe and effective. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a recycling bag with an open end of the recycling bag of the present invention adhered to an opening and recycling line by a chemical adhesive.

Fig. 2 is a schematic structural view of a recycling bag with an open end of the recycling bag of the present invention inlaid on an opening and recycling line.

Fig. 3 is a schematic structural diagram of a recycling bag in which the opening and recycling line of the recycling bag of the present invention can slide in a slot in the open end of the recycling bag.

Fig. 4 is a section of the recycling bag opening and recycling line of the present invention fixed to a slot in the open end of the recycling bag and cannot be moved, and other parts of the opening and recycling line can slide in the slot in the open end of the recycling bag Schematic diagram of the recycling bag.

FIG. 5 is a schematic structural diagram of the recovery bag of the present invention after it is deployed in vivo.

FIG. 6 is a schematic structural diagram when the positioning button of the recycling bag of the present invention is mated.

FIG. 7 is a schematic structural diagram when the positioning button of the present invention is a screw structure.

FIG. 8 is a schematic structural diagram when the positioning button of the present invention is an eccentric wheel structure.

FIG. 9 is a schematic structural diagram when the inner sheath of the recovery bag of the present invention has a through hole through which surgical instruments can pass in and out. Figures 10 and 11 are schematic diagrams of the structure when the plane of the open end of the recycling bag of the present invention is adjusted to different angles with the radial direction of the inner sheath by moving the relative position between the inner sheath and the outer sheath.

FIG. 12 is a schematic structural diagram of a recovery bag of the present invention installed in an outer sheath.

Figures 13 and 14 are schematic diagrams of the workpiece of the recycling bag of the present invention.

In the above picture:

1 is the recovery bag, 1-1 is the flexible wall, 1-2 is the open end, 1-3 is the closed end, 2 is the opening and recovery line, 3 is the removed biological tissue, 4 is the inner sheath of the recovery bag, 4- 1 is the distal end of the inner sheath, 4-2 is the handle of the inner sheath, 4-3 is the groove of the inner sheath, 5 is the outer sheath of the recovery bag, 5-1 is the distal end of the outer sheath, and 5-2 is the outer sheath , 6 is the positioning knob, 6-1 is the positioning knob housing, 6-2 is the return spring, 6-3 is the switch on the positioning knob, 6-4 is the protective film on the positioning knob, and 6-5 is the positioning projection. Block, 6-6 is the positioning screw, 6-7 is the slider, 6-8 is the fixing screw, 7 is the loose knot, 8 is the slot at the open end of the recycling bag, 9 is the memory alloy fiber mesh, 10 is the flexible material, 11 is Surgical instruments. detailed description

The improved biological tissue recovery bag according to the present invention is shown in FIG. 1. The open end 1-2 of the recovery bag is adhered to the opening and recovery line 2 by a chemical adhesive.

The flexible wall 1-1 of the recycling bag 1 adopts the composite structure of the flexible polymer material 10 reinforced by the memory alloy fiber network 9. In the body, due to the effect of body temperature, the memory alloy fiber network 9 recovers superelasticity, making the flexible wall of the recycling bag 1-1 While maintaining softness, it has appropriate elasticity, which is convenient for inclusion in resected biological tissues 3 o

The opening and recovery line 2 in this embodiment may be made of a shape memory alloy wire, such as a nickel-titanium shape memory alloy wire or a thin-plated copper-based shape memory alloy wire. When manufacturing, first shape the nickel-titanium shape memory alloy wire or thin copper-based shape memory alloy wire through the heat treatment to make it have a period above the recovery temperature. It has a shape matching the open end 1-2 of the recycling bag, and the opening and recycling line 2 is obtained.

Then, the open end 1-2 of the recovered recycling bag reinforced with the memory alloy fiber 9 is bonded to the opening and recovery line 2 made of the memory alloy wire with a chemical adhesive, and the open end 1-2 of the recovery bag has Matching shapes on a section of memory alloy wire. Finally, both ends of the memory alloy wire are fixed on the distal end 4-1 of the inner sheath 4, and the improved biological recovery bag of the present invention can be obtained.

In clinical use, the recovery bag 1 of the present invention compressed in the outer sheath 5 is released, and under the action of body temperature, the opening and recovery line 2 quickly recover the set geometry, driving the open end 1 of the flexible recovery bag 1 2 Unfold to facilitate the removal of the biological tissue 3 removed under the endoscope. After incorporating the removed biological tissue 3 into the recovery bag 1, the inner sheath 4 can be retracted toward the 4-2 end of the inner sheath handle or the outer sheath 5 can be moved along the inner sheath. 4 forward delivery, can compress and deform the expansion and recovery line 2 with superelasticity, and drive the open end 1-2 of the recovery bag to be recovered into the outer sheath 5 and taken out of the body. At this time, if the excised biological tissue 3 in the recovery bag 1 is not too large, it can be completely recovered into the outer sheath 5 and taken out of the body. If the excised biological tissue 3 is too large, the recovery bag opened by the opening and the recovery line 2 is opened. When the end 1-2 is completely retracted into the outer sheath 5, the open end 1-2 of the recovery bag is basically closed, and the recovery bag 1 containing the resected biological tissue 3 can be safely moved to the vicinity of the incision and broken with surgical instruments and taken out of the body. Refer to Figure 5, Figure 10, and Figure 12. As shown in FIG. 2, the improved biological tissue recovery bag of the present invention has the open end 1-2 of the recovery bag inlaid on the opening and recovery line 2. The recovery bag 1 having this structure is more convenient when the recovery bag 1 is recovered into the outer sheath 5 by the inner sheath 4. In the improved biological tissue recovery bag of the present invention, as shown in FIG. 3, the open and recovery line 2 can slide in the slot 8 at the open end of the recovery bag, and the open and recovery line 2 passes through the outer sheath 5. When the central hole is pulled outward, the open end 1-2 of the recovery bag shrinks concentrically, and the recovery bag 1 can be retracted into the outer sheath 5. Refer to Figure 5, Figure 12. The improved biological tissue recovery bag according to the present invention, as shown in FIG. 4, one end of the open and recovery line 2 is fixed to the slot 8 at the open end of the recovery bag and cannot be moved. The other part of the open and recovery line 2 cannot be moved. It can slide in the slot 8 at the open end of the recovery bag and pass through the knot 7. When the open and recovery line 2 is pulled, one end of the open and recovery line 2 is fixed to the open end 1-2 of the recovery bag, and the other end is continuously pulled outward. The action of the knot 7 makes the recovery bag open. The end 1-2 is concentrically contracted, the open end 1-2 of the recovery bag is closed, and the recovery bag 1 is recovered into the outer sheath 5 or taken out of the body. Refer to Figure 5, Figure 12. In the improved biological tissue recovery bag according to the present invention, as shown in FIG. 5, the expansion of the recovery bag 1 and the recovery line 2 are connected to the distal end 4-1 of the inner sheath, and the outer sheath 5 is sheathed outside the inner sheath 4 and the outer The sheath handle 5-2 is installed at the proximal end of the outer sheath 5, the inner sheath handle 4-2 is installed at the proximal end of the inner sheath 4, the positioning button 5 is installed at the outer sheath handle 5-2, and the positioning button 6 can fix the outer sheath 5 and the inner Relative position of sheath 4. Loosen the positioning knob 6 and retract the inner sheath 4 backward to recover the recovery bag 1 into the outer sheath 5. Withdraw the outer sheath 5 downward and expose the recovery bag 1 completely outside the outer sheath 5 for recovery Bag 1 is unfolded. The improved biological tissue recovery bag of the present invention, as shown in FIG. 6, is a schematic structural diagram of the positioning bag of the recovery bag of the present invention when the positioning button is concave and convex, and the switch 6-3 on the positioning button is depressed, and the positioning projection 6 -5 tilt upward, the inner sheath 4 can slide inside the outer sheath 5; loosen the switch 6-3 on the positioning knob, and under the action of the reset spring 6-2, the positioning projection 6-5 snaps into the positioning on the inner sheath 4 In the groove 4-3, the relative position between the inner 4 and the outer sheath 5 is fixed, and the inner sheath 4 and the outer sheath 5 cannot slide relative to each other. The protective film 6-4 can prevent dust and liquid from entering the positioning knob. The return spring 6-2, the positioning projection 6-5 and the switch 6-3 on the positioning knob are installed on the positioning knob housing 6-1. As shown in FIG. 7, the improved biological tissue recovery bag of the present invention is a schematic structural diagram when the positioning button of the present invention is a threaded structure. The positioning screws 6-6 screwed on the positioning button can fix the inner sheath 4 and the outer The relative positions between the sheaths 5 are loosened by the set screws 6-6 on the positioning knob, and the inner sheath 4 and the outer sheath 5 can slide. The improved biological tissue recovery bag according to the present invention, as shown in FIG. 8, is a schematic structural diagram when the positioning knob of the present invention has an eccentric wheel structure. The positioning knob 6 is rotated clockwise, and the eccentric wheel structure on the positioning knob 6 is pressed against slip. Blocks 6-7 can fix the relative position between the inner sheath 4 and the outer sheath 5, and rotate the positioning knob 6 counterclockwise to relax the slider 6-7, and the inner sheath 4 and the outer sheath 5 can slide. The set screws 6-8 fix the slider 6-7 to the end surface of the outer sheath 5. The improved biological tissue recovery bag according to the present invention, as shown in FIG. 9, is a schematic structural diagram when the inner sheath 4 of the recovery bag of the present invention has a through hole through which surgical instruments can pass in and out, and the inner sheath 4 can be kept large. The through hole can be used to put a suction pipe or other surgical instruments, such as surgical scissors, breakers, and endoscopes, to facilitate various surgical operations. As shown in FIGS. 10 and 11, the improved biological tissue recovery bag of the present invention can adjust the position of the open end 1-2 of the recovery bag of the present invention by moving the relative position between the inner sheath 4 and the outer sheath 5. The degree of opening, and the angle formed by the curved surface of the open end 1-2 and the radial direction of the inner sheath 4, facilitate the removal of the removed biological tissue 3 into the recovery bag 1 during surgery, and the inner sheath 4 moves toward the inner sheath handle 4-2. Pull in the direction, the smaller the opening degree of the open end 1-2 of the recovery bag is, the smoother the angle formed by the curved surface of the open end 1-2 and the radial direction of the inner sheath 4; conversely, the more the outer sheath 5 is outwardly handled by the sheath Pull in the direction of the end 5-2, the greater the opening degree of the open end 1-2 of the recovery bag, the larger the diameter of the biological tissue 3 that can be included, and the angle formed by the curved surface of the open end 1-2 and the radial direction of the inner sheath 4. Bigger. The improved biological tissue recovery bag according to the present invention, as shown in FIG. 12, is a schematic structural diagram of the recovery bag of the present invention installed in an outer sheath. The recovery bag 1 is installed before the distal end 4-1 of the inner sheath. In the distal end 5-1, the inner sheath handle 4-2 is installed on the proximal end of the inner sheath. The inner sheath 4 can move axially in the outer sheath 5. The outer sheath handle 5-2 is installed on the proximal end of the outer sheath. The positioning button 6, the relative position of the inner sheath 4 and the outer sheath 5 can be fixed; loosen the positioning knob 6, and pull the outer sheath 5 toward the handle 4-2 end of the inner sheath to release the recovery bag 1 completely; the outer sheath 5 moves forward, Or the outer sheath 5 is fixed, and the inner sheath 4 is retracted toward the inner sheath handle 4-2 end, and the recovery bag 1 can be completely recovered into the outer sheath 5. The improved biological tissue recovery bag according to the present invention, as shown in FIGS. 13 and 14, is a schematic diagram of the workpiece of the recovery bag of the present invention. The excised biological tissue 3 is moved into the opened recovery bag 1, and then The inner sheath 4 is retracted toward the inner sheath handle 4-2, and the opening and recovery line 2 drives the open end 1-2 of the recovery bag into the outer sheath 5. The resected biological tissue 3 can be recovered into the outer sheath 5 or Move to the vicinity of the incision, and take it out of the body after crushing. It should be noted that the structures disclosed and described herein may be replaced with other structures having the same effect, and the embodiments described in the present invention are not the only structures implementing the present invention. Although the preferred embodiments of the present invention have been described and described herein, those skilled in the art clearly know that these embodiments are merely examples, and those skilled in the art can make countless changes, improvements and Instead, without departing from the present invention, the protection scope of the present invention should be defined according to the spirit and scope of the claims appended to the present invention.

Claims

1. An improved biological tissue recovery bag, comprising: a recovery bag (1) and an opening and recovery line (2), the recovery bag (1) is made of a flexible wall (1-1) and an open end (1-2) , Closed end (Bu 3) composition, recycling bag

(1) biological tissues (3);

A) The opening and recycling line (2) contains a line segment that matches the shape of the open end (1-2) of the recycling bag;

B) The open end (1-2) of the recycling bag is connected to a line segment on the opening and recycling line (2) that matches the shape of the open end (1-2) of the recycling bag.

2. The biological tissue recovery bag according to claim 1, wherein: the opening and recovery line

(2) 釆 Made of shape memory alloy wire or shape memory alloy sheet, or alloy spring steel, or any other material that can store the deformed shape, and when released, can return to the original or close to the original shape of any material Manufacturing.

3. The biological tissue recovery bag according to claim 1, characterized in that: the open end (1-2) of the recovery bag (1) is connected to the open and recovery line (2) with the open end of the recovery bag (1-2) Lines with matching shapes are connected by sliding.

4. The biological tissue recovery bag according to claim 3, characterized in that: said opening and recovery line (2) can slide in the slot (1-4) of the open end (1-2) of the recovery bag .

5. The biological tissue recovery bag according to claim 3, characterized in that a certain section of the opening and recovery line (2) is fixed to a slot hole at the open end (1-2) of the recovery bag and cannot be moved The opening and other parts of the recycling line (2) can slide in the slots (1-4) of the open end (1-2) of the recycling bag.

6. The biological tissue recovery bag according to claim 1, characterized in that: the open end (1-2) of the recovery bag (1) is connected to the open and recovery line (2) and the open end of the recovery bag (1-2) Lines with matching shapes are fixedly connected.

7. The biological tissue recovery bag according to claim 6, characterized in that: the open end (1-2) of the recovery bag can be adhered to the opening and recovery line (2) by a chemical adhesive.

8. The biological tissue recovery bag according to claim 6, characterized in that: the open end (1-2) of the recovery bag can be inlaid on the expansion and recovery line (2).

9. The biological tissue recovery bag according to claim 1, characterized in that: the flexible wall (1-1) of the recovery bag is made of a flexible polymer material, or a metal mesh, or a synthetic fiber-reinforced flexible Manufactured from polymer materials, either using memory alloy fiber webs or flexible polymer materials reinforced with synthetic fiber webs.

10. The biological tissue recovery bag according to claim 9, wherein the flexible polymer material is selected from the group consisting of silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin, or polytetrafluoroethylene. One of the elastomer or polymer materials.

11. The biological tissue recovery bag according to claim 1, characterized in that: said opening and recovery line (2) is connected to the distal end (4-1) of the inner sheath, and is installed at the distal end of the inner sheath ( 4-1) distal end of anterior and outer sheath

(5-1) within.

12. The biological tissue recovery bag according to claim 11, wherein the relative position of the inner sheath (4) and the outer sheath (5) is fixed by a positioning button (6).

13. The biological tissue recovery bag according to claim 1 or 11, characterized in that: said opening and recovery line (2) is released from the distal end (4-1) of the inner sheath and directly leads to the outside; or Form a closed loop or remove with surgical instruments in the body through a knot.

14. The biological tissue recovery bag according to claim 1, characterized in that: the open end (1-2) of the recovery bag is coated with a color significantly different from that of the biological tissue (3) observed under an endoscope. .

15. The biological tissue recovery bag according to claim 1, characterized in that: the radial plane of the opening and recovery line (2) and the inner sheath (4) are arc-shaped with a certain bending arc.

16. The biological tissue recovery bag according to claim 1, characterized in that: one end of the opening and recovery line (2) has a knot (7), and the other end is from the open end (1-2) of the recovery bag After passing through the slot hole (8), it is then passed through the knot to form a lasso structure.