CN112842435A

CN112842435A - Extrusion type tissue blocking device

Info

Publication number: CN112842435A
Application number: CN202011616309.5A
Authority: CN
Inventors: 钟鸣; 岳计强; 刘男; 刘艳容
Original assignee: Hangzhou Kangji Medical Instrument Co Ltd
Current assignee: Hangzhou Kangji Medical Instrument Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-28

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an extrusion type tissue blocking device. The invention provides a squeezing type tissue blocker, aiming at the problems of complex operation and secondary injury risk to patients in the prior art, comprising a ring forming piece capable of forming an annular ring, wherein a ring forming positioning structure for keeping the annular ring after the annular ring is formed is arranged on the ring forming piece, an expansion piece is arranged in the annular ring, an accommodating space for accommodating tissues is formed between the expansion piece and the annular ring, the expansion piece is communicated with a fluid conduit, and when the fluid conduit fills fluid into the expansion piece, the expansion piece expands in the annular ring to reduce the accommodating space so as to extrude the tissues in the accommodating space. Compared with the prior art that the expansion piece is used for applying pressure from the outside of the tissue to block, the invention has the advantages that the operation is simpler, the discontinuous blood supply is convenient to realize, and the secondary injury can be effectively avoided.

Description

Extrusion type tissue blocking device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an extrusion type tissue blocking device.

Background

In a surgical procedure, for example, a hepatobiliary resection, a part of an organ must be removed, and if the blood supply is not cut off during the resection, the amount of bleeding of a patient is large, and the blood loss is excessive. In the prior art, the uninflated saccule is guided to a blood vessel designated position through a guide wire, and then gas is blown in to expand the saccule and attach to the inner wall of the blood vessel, so that the problem of large bleeding amount is solved in a mode of blocking the blood vessel, but the mode is complex to operate, and meanwhile, the risk of secondary injury is caused to a patient.

For example, the chinese utility model discloses a double-balloon type vascular occlusion device [ application number: 201820965795.3], the utility model comprises an insertion system which can be inserted into the aortic blood conduction hole of the human body; the implantation system comprises a catheter, a balloon I, a balloon II, a gas delivery pipe I and a gas delivery pipe II which are all made of flexible materials; openings are formed in the upper end and the lower end of the catheter, the balloon I is connected to the position, close to the opening in the upper end, of the catheter in a sealing mode, and the balloon II is connected to the position, close to the opening in the lower end, of the catheter in a sealing mode; the balloon I and the balloon II are both inflatable and are of balloon structures which block a blood conducting hole after being inflated, the balloon I is communicated with the gas pipe I, and the balloon II is communicated with the gas pipe II.

The utility model discloses a patent has and can open the operation safely, improves the advantage of operation quality and operation security, but what it still adopted is to extend to the sacculus to the inside scheme of blocking of blood vessel, so still have the operation complicacy, have the problem of the risk of secondary injury to patient simultaneously.

Disclosure of Invention

The invention aims to solve the problems and provides a pressing type tissue blocking device which can control blood supply by pressing tissue through external force application.

In order to achieve the purpose, the invention adopts the following technical scheme:

a squeezing type tissue blocker comprises a ring forming piece capable of forming an annular ring, wherein a ring forming positioning structure for keeping the annular ring after the annular ring is formed is arranged on the ring forming piece, an expansion piece is arranged in the annular ring, a tissue accommodating space is formed between the expansion piece and the annular ring, the expansion piece is communicated with a fluid conduit, and when the fluid conduit fills fluid into the expansion piece, the expansion piece expands in the annular ring to reduce the accommodating space so as to extrude the tissue in the accommodating space.

In the above-described squeeze tissue occluder, the expansion member is fixedly disposed on the ring member.

In the above-described extruded tissue occluder, the loop forming member comprises a strip that is bent to form the annular ring.

In the extrusion type tissue blocking device, the ring forming positioning structure comprises a positioning through hole arranged at the side part of the bar-shaped body, one end of the bar-shaped body penetrates through the positioning through hole to form the annular ring, the bar-shaped body is provided with anti-withdrawal convex rings which prevent withdrawal after the bar-shaped body passes through the positioning through hole, and the number of the anti-withdrawal convex rings is at least one and is distributed at intervals along the axial direction of the bar-shaped body.

In the extrusion type tissue blocking device, one end of the strip-shaped body is columnar, the other end of the strip-shaped body is flat, the positioning through hole is formed in one end of the flat, and the anti-withdrawal convex ring is arranged at one end of the columnar.

In the extrusion type tissue blocking device, the expansion piece is made of elastic materials and is in a sheet shape, one flat end of the strip-shaped body is provided with the fluid through hole, two ends of the fluid through hole are respectively positioned on the flat surfaces, the expansion piece is fixedly covered at one end of the fluid through hole, the periphery of the expansion piece and the outer surface of the strip-shaped body form an annular seal, and the other end of the fluid through hole is communicated with the fluid guide pipe.

In the above-described squeeze tissue occluder, the end of the fluid passage hole covered with the expansion member has a recessed region in which the fluid passage hole is located, and the expansion member covers at least the recessed region.

In the extrusion type tissue blocking device, the positioning through hole comprises a locking hole and a guide hole which are communicated with each other, the inner diameter of the guide hole is larger than that of the locking hole, and the guide hole is closer to the expansion piece than the locking hole.

In the above-described squeeze tissue occluder, the strip is made of silicone or rubber.

In the above extrusion type tissue blocking device, the fluid conduit is further provided with an indication balloon, and the indication balloon is communicated with the expansion piece through the fluid conduit.

Compared with the prior art, the invention has the advantages that:

1. compared with the prior art that the expansion piece is used for applying pressure from the outside of the tissue to block, the invention has the advantages that the operation is simpler, the discontinuous blood supply is convenient to realize, and the secondary injury can be effectively avoided.

2. According to the invention, the indication saccule is arranged on the inflation catheter, so that medical personnel can quickly judge whether the expansion piece positioned in the patient body is in an expansion or contraction state according to the state of the indication saccule, and the operation is convenient.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic representation of the invention in use with tissue not occluded by compression;

FIG. 4 is a schematic view of tissue being occluded by compression during use of the present invention;

in the figure: the device comprises a ring forming member 1, a ring forming positioning structure 2, an expansion member 3, a containing space 4, a fluid conduit 5, a fluid through hole 6, a concave area 7, an indicating balloon 8, a strip-shaped body 11, a positioning through hole 21, an anti-back convex ring 22, a locking hole 23, a guide hole 24 and an annular ring 100.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, a squeeze tissue occluder comprises a loop forming member 1 capable of forming an annular ring 100, wherein the loop forming member 1 is provided with a loop positioning structure 2 for holding the annular ring 100 after the annular ring 100 is formed, an expansion member 3 is arranged in the annular ring 100, a tissue accommodating space 4 is formed between the expansion member 3 and the annular ring 100, the expansion member 3 is communicated with a fluid conduit 5, and when the fluid conduit 5 fills the expansion member 3 with fluid, the expansion member 3 expands in the annular ring 100 to reduce the tissue accommodating space 4, so that the tissue in the accommodating space 4 is squeezed.

In use, the present invention, a fluid, such as air, is delivered into the expandable member 3 through the fluid conduit 5, causing the expandable member 3 to expand and compress the blood vessel, thereby stopping the supply of blood to the surgical site. However, since the organ is damaged due to the fact that blood is not supplied for a long time, the gas in the expansion part 3 needs to be released through the fluid conduit 5 at intervals, so that the expansion part 3 is contracted, blood supply of the blood vessel is recovered, and namely the expansion part 3 is used for carrying out intermittent blood supply. Therefore, the invention utilizes the expansion piece 3 to apply pressure from the outside of the tissue for blocking, compared with the expansion blocking mode after extending to the inside of the tissue in the prior art, the operation is simpler, the discontinuous blood supply is convenient to realize, and the secondary injury can be effectively avoided.

Preferably, the expansion element 3 is fixedly arranged on the loop element 1. This ensures that the pressing position of the expansion element 3 is relatively fixed.

Referring to fig. 1 and 3, the loop forming member 1 includes a strip 11, and the strip 11 is bent to form the annular ring 100. The strip 11 is made of a flexible material, such as silicone or rubber.

As shown in fig. 2, the ring-forming positioning structure 2 includes positioning through holes 21 disposed at the side portions of the bar 11, one end of the bar 11 passes through the positioning through holes 21 to form the annular ring 100, the bar 11 is provided with anti-back protruding rings 22 for preventing back-out after passing through the positioning through holes 21, and the number of the anti-back protruding rings 22 is at least one and is distributed at intervals along the axial direction of the bar 11. That is, when the anti-receding convex rings 22 are provided in plurality, a certain interval is provided between two adjacent anti-receding convex rings 22, so that when different anti-receding convex rings 22 are matched with the positioning through holes 21, the sizes of the formed annular rings 100 are different, so as to meet the requirements of different surgical sites.

Specifically, the positioning through-hole 21 includes a locking hole 23 and a guide hole 24 communicating with each other, the inner diameter of the guide hole 24 is larger than that of the locking hole 23, and the guide hole 24 is closer to the expansion member 3 than the locking hole 23. The inner diameter of the guide hole 24 is gradually reduced from one end far away from the locking hole 23 to one end close to the locking hole 23, and the inner diameter of one end far away from the locking hole 23 of the guide hole 24 is more than twice of the inner diameter of the locking hole 23.

Preferably, one end of the strip 11 is columnar, the other end is flat, the positioning through hole 21 is arranged at one end of the flat, and the anti-back convex ring 22 is arranged at one end of the columnar. One end of the strip 11 is flat to facilitate the bending of the strip 11 to form the annular ring 100, and one end of the strip 11 is cylindrical to facilitate the insertion of one end of the strip 11 into the positioning through hole 21 for positioning and fixing.

As shown in fig. 2 and 4, the expansion member 3 is made of an elastic material and has a sheet shape. The expansion piece 3 does not form a regular circle after being expanded, so that the area of the expansion piece 3 pressed on the surface of the blood vessel is larger, the pressure on the blood vessel is smaller, the blood vessel is not easy to be damaged, and the deviation is not easy to generate in the pressing process. The strip-shaped body 11 is provided with a fluid through hole 6 at one flat end, the two ends of the fluid through hole 6 are respectively positioned on the flat surface, the expansion piece 3 is fixedly covered at one end of the fluid through hole 6, the periphery of the expansion piece is in annular seal with the outer surface of the strip-shaped body 11, and the other end of the fluid through hole 6 is communicated with the fluid conduit 5. I.e. the flat end of the strip 11 encloses with the expansion element 3 a chamber which is only in communication with the fluid passage 6 and into which a fluid, for example air, flows via the fluid passage 6, causing expansion of the expansion element 3.

As shown in fig. 1, one end of the fluid passage hole 6 covered with the swelling member 3 has a depressed region 7, the fluid passage hole 6 is located in the depressed region 7, and the swelling member 3 covers at least the depressed region 7.

As shown in fig. 1, an indication balloon 8 is further disposed on the fluid conduit 5, and the indication balloon 8 is communicated with the inflation member 3 through the fluid conduit 5. According to the invention, the indicating saccule 8 is arranged on the fluid conduit 5, so that medical personnel can quickly judge whether the expansion piece 3 positioned in the patient body is in an expansion or contraction state according to the state of the indicating saccule 8, and the operation is convenient.

The working principle of the invention is as follows: when the invention is used, the strip-shaped body 11 is bent, so that one end of the strip-shaped body 11 is inserted into the positioning through hole 21, and the anti-withdrawal convex ring 22 is pressed at the edge of the positioning through hole 21. The strip 11 forms around it an annular ring 100, inside which ring 100 the vessel to be extruded and the expansion element 3 are located. Fluid, which may be air for example, is delivered into the expandable member 3 through the fluid conduit 5 using a syringe, causing the expandable member 3 to expand and compress the blood vessel, thereby effecting cessation of blood supply to the surgical site. However, since the organ is damaged due to the fact that blood is not supplied for a long time, the gas in the expansion part 3 needs to be released through the fluid conduit 5 at intervals, so that the expansion part 3 is contracted, blood supply of the blood vessel is recovered, and namely the expansion part 3 is used for carrying out intermittent blood supply. Because the inflation piece 3 and the indication balloon 8 are communicated with each other, when the inflation piece 3 is in the inflation state, the indication balloon 8 is also in the inflation state, and when the inflation piece 3 is in the contraction state, the indication balloon 8 is also in the contraction state, so that the state of the inflation piece 3 positioned in the body of the patient can be conveniently indicated. The invention utilizes the expansion piece 3 to apply pressure from the outside of the tissue for blocking, compared with the expansion blocking mode after extending to the inside of the tissue in the prior art, the operation is simpler, the discontinuous blood supply is convenient to realize, and the secondary injury can be effectively avoided.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the ring forming member 1, the ring forming positioning structure 2, the expansion member 3, the accommodating space 4, the fluid conduit 5, the fluid through hole 6, the recessed area 7, the indicating balloon 8, the bar 11, the positioning through hole 21, the anti-receding convex ring 22, the locking hole 23, the guiding hole 24, the annular ring 100, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. An extruded tissue occlusion device, comprising: the ring forming device comprises a ring forming piece (1) capable of forming an annular ring (100), wherein a ring forming positioning structure (2) for keeping the annular ring (100) after the annular ring (100) is formed is arranged on the ring forming piece (1), an expansion piece (3) is arranged in the annular ring (100), an accommodating space (4) for accommodating tissues is formed between the expansion piece (3) and the annular ring (100), the expansion piece (3) is communicated with a fluid conduit (5), and when the fluid conduit (5) fills fluid into the expansion piece (3), the expansion piece (3) expands in the annular ring (100) to reduce the accommodating space (4) so as to extrude the tissues in the accommodating space (4).

2. The extruded tissue occluder of claim 1, wherein: the expansion piece (3) is fixedly arranged on the ring forming piece (1).

3. The extruded tissue occluder of claim 1, wherein: the ring forming piece (1) comprises a strip-shaped body (11), and the strip-shaped body (11) is bent to form the annular ring (100).

4. The extruded tissue occluder of claim 3, wherein: the ring forming positioning structure (2) comprises positioning through holes (21) arranged on the side portions of the bar-shaped bodies (11), one ends of the bar-shaped bodies (11) penetrate through the positioning through holes (21) to form the annular ring (100), anti-withdrawal convex rings (22) which are used for preventing withdrawal after the bar-shaped bodies (11) pass through the positioning through holes (21) are arranged on the bar-shaped bodies (11), and the number of the anti-withdrawal convex rings (22) is at least one and is distributed along the axial direction of the bar-shaped bodies (11) at intervals.

5. The extruded tissue occluder of claim 4, wherein: one end of the strip-shaped body (11) is columnar, the other end of the strip-shaped body is flat, the positioning through hole (21) is arranged at one end of the flat, and the anti-retreat convex ring (22) is arranged at one end of the columnar.

6. The extruded tissue occluder of claim 5, wherein: the expansion piece (3) is made of elastic materials and is in a sheet shape, a fluid through hole (6) is formed in one flat end of the strip-shaped body (11), two ends of the fluid through hole (6) are located on a flat surface respectively, the expansion piece (3) is fixedly covered at one end of the fluid through hole (6), the periphery of the expansion piece and the outer surface of the strip-shaped body (11) form an annular seal, and the other end of the fluid through hole (6) is communicated with the fluid conduit (5).

7. The extruded tissue occluder of claim 6, wherein: the end of the fluid through hole (6) covered with the expansion piece (3) is provided with a concave area (7), the fluid through hole (6) is positioned in the concave area (7), and the expansion piece (3) at least covers the concave area (7).

8. The extruded tissue occluder of claim 4, wherein: the positioning through hole (21) comprises a locking hole (23) and a guide hole (24) which are communicated with each other, the inner diameter of the guide hole (24) is larger than that of the locking hole (23), and the guide hole (24) is closer to the expansion piece (3) than the locking hole (23).

9. The extruded tissue occluder of claim 3, wherein: the strip (11) is made of silica gel or rubber.

10. The extruded tissue occluder of claim 1, wherein: the fluid catheter (5) is also provided with an indicating saccule (8), and the indicating saccule (8) is communicated with the expansion piece (3) through the fluid catheter (5).