CN215129955U

CN215129955U - Bag

Info

Publication number: CN215129955U
Application number: CN202121507150.3U
Authority: CN
Inventors: 秦健恒; 吕振杰; 李少田
Original assignee: Shanghai Legend Medical Technology Co ltd
Current assignee: Shanghai Legend Medical Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-12-14
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a bag, including outer tube, well sleeve pipe, interior pole, bag and holding ring, well sleeve pipe assembly is in the outside of pole, the outer tube assembly is in well sheathed tube outside, the bag is fixed in the front end clearance of well sleeve pipe and outer tube, and the bag front end has the metal end, it is fixed with the bag that the inside of metal end is worn to interior pole front end, well sheathed tube one side is provided with well casing seat, the bottom of well casing seat is provided with the draw-in groove. This kind of bag passes through the reverse structure of locking of screw cap, it screws to have avoided well sleeve pipe and outer tube rotation to make the bag structure, can't strut completely and the unable normal condition that plays a role to can realize outer tube and well sheathed tube quick dismantlement through above-mentioned screw cap, it withdraws from rapidly to reach outer tube and well sheathed tube after bone cement pours into to finish, and the in-process only rotatory screw cap, avoid rotating bag damage centrum, it is difficult for strutting and has withdrawed from and have the dead problem of card to have solved the bag.

Description

Bag

Technical Field

The utility model relates to the technical field of medical equipment, which is applicable to the minimally invasive surgery of vertebral compression fracture caused by osteoporosis, in particular to a capsular bag.

Background

Osteoporotic vertebral compression fracture ("OVCF") is a common spinal injury and can cause long-term disability, generally, OVCF involves collapse of one or more vertebral bodies in the spine, and is used for treating vertebral compression fracture, generally, vertebroplasty (PVP) or kyphoplasty (PKP) is adopted, which has the advantages of small trauma, good pain-relieving effect and the like, but in the operation, a bone filling material needs to be injected into a diseased vertebral body through a percutaneous puncture mode, and complications such as bone cement leakage are easily caused.

In recent years, doctors can use the bone filling bag to prevent bone cement leakage in partial treatment operations, in the operation, the bone filling bag is pushed into a diseased vertebral body along a working channel, then the bone cement is injected into the bag, after the bone cement is hardened, the collapsed vertebral body is lifted, the strength of the vertebral body is increased, pain is relieved, and the high-density molecular net layer structure of the bag can cover most of the bone cement and reduce the leakage rate of the bone cement.

Most of the prior bone cement filling bag kits are of a screw-joint fixing structure, the bag is fixed at the front end of the middle sleeve and can be rapidly withdrawn in a gap between the front ends of the middle sleeve and the outer sleeve in a screw-joint or clamping mode while being fixed in a screw-joint mode, but under the pulling action of rotating force, the bag structure is easy to damage and not easy to be propped open, the risk of blocking is generated during withdrawing, and the filling is uneven during the injection of the bone cement, so that the good treatment effect cannot be achieved.

Therefore, to the revolving force that current bone cement fills external member spiral combination structure and causes under dragging the effect, the bag structure fragile, difficult strutting has the dead risk of card when withdrawing from, and fills inhomogeneous current situation when bone cement is injected, it is necessary to develop one kind can realize not damaging bag structure and bone cement and pour into even bone cement filler.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the content is not enough to above technique, avoids the bag during operation not to strut, leads to the functional failure, and fixes a position accurately, and the bag is fixed firm, provides a bag.

In order to achieve the above object, the present invention provides a bag, the structure includes outer tube, well pipe box, interior pole, bag and holding ring, well sleeve pipe assembly is in the outside of pole, the outer tube assembly is in well sheathed tube outside, the bag is fixed in the front end clearance of well sleeve pipe and outer tube, and the bag front end has the metal end, it is fixed with the bag that the metal end was worn to interior pole front end, well sheathed tube one side is provided with well casing seat, the bottom of well casing seat is provided with the draw-in groove, one side of outer tube is provided with the outer tube seat, the outside of outer tube seat is provided with the screw cap, the outside of outer tube is provided with the holding ring, one side of well casing seat is provided with the siphunculus screw seat.

Furthermore, the metal end and the bag are fixed by a thread, a groove is arranged in the metal end and is connected with the front end of the inner rod, so that the inner rod does not move in the bag and supports the bag.

Furthermore, well casing seat bottom is cylindric, and the periphery is provided with the screw, and its inside has the draw-in groove, the draw-in groove combines together with outer tube seat top trip.

Furthermore, the appearance of the middle sleeve seat is provided with directional marks, so that the directional function is achieved for the sac.

Furthermore, the top end of the outer tube base is provided with a clamping tenon, and the clamping tenon is combined with a clamping groove at the bottom of the middle casing.

Further, screw cap and outer tube seat tight fit avoid well sleeve pipe and outer tube cooperation not hard up, can realize outer tube and well sheathed tube quick dismantlement through the screw cap, reach the outer tube and withdraw from rapidly with well sheathed tube after bone cement pours into and finishes, and the in-process only rotatory screw cap avoids rotating the bag and damages the centrum.

Compared with the prior art, the utility model, have following advantage:

(1) the utility model discloses the bag, through the reverse structure of locking of screw cap, avoided well sleeve pipe to screw with the rotatory bag structure that makes of outer tube, can't strut completely and the unable normal play circumstances of effect to can realize outer tube and well sheathed tube quick dismantlement through above-mentioned screw cap, reach outer tube and well sheathed tube and withdraw from rapidly after bone cement pours into and finishes, and the in-process only rotatory screw cap, avoid rotating bag damage centrum.

(2) The utility model discloses the bag is bilayer structure, increases the dispersed effect of bone cement, has reduced the condition of bone cement seepage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic structural view of the middle sleeve of the present invention;

fig. 3 is a schematic structural view of the outer tube of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the assembly of the pipe guide screw seat, the middle sleeve seat, the outer tube seat and the screw cap of the present invention.

Reference numbers and corresponding part names in the drawings: 1. an outer tube; 2. a middle sleeve; 3. an inner rod; 4. a pouch; 6. a middle sleeve seat; 7. an outer tube seat; 8. a tenon is clamped; 9. a card slot; 10. a threaded cap; 11. a positioning ring; 12. a pipe and wire seat; 13. a metal end.

Detailed Description

In order to make the objects, embodiments and advantages of the present invention clearer, and to make the understanding easier for those skilled in the art to understand, the present invention will be further described with reference to the following examples and drawings, and the following description only represents the preferred embodiments of the present invention, and is not intended to limit the present invention.

Example 1: referring to fig. 1-4, a capsular bag comprises an outer tube 1, a middle sleeve 2, an inner rod 3, a capsular bag 4 and a positioning ring 11, wherein the middle sleeve 2 is assembled outside the inner rod 3, the outer tube 1 is assembled outside the middle sleeve 2, the front end of the capsular bag 4 is provided with a metal end 13, the front end of the inner rod 3 penetrates through the inside of the metal end 13 to be fixed with the capsular bag 4, one side of the middle sleeve 2 is provided with a middle sleeve seat 6, the bottom end of the middle sleeve seat 6 is cylindrical, the periphery of the middle sleeve seat 6 is provided with threads, the shape of the middle sleeve seat 6 is provided with a directional mark, the bottom end of the middle sleeve seat 6 is provided with a clamping groove 9, one side of the outer tube 1 is provided with an outer tube seat 7, the outside of the outer tube seat 7 is provided with a threaded cap 10, the outer side of the outer tube 1 is provided with the positioning ring 11, and one side of the middle sleeve seat 6 is provided with a through tube screw seat 12;

the top end of the outer tube seat 7 is provided with a clamping tenon 8, the clamping tenon 8 is combined with a clamping groove 9 at the bottom of the middle sleeve 2, the threaded cap 10 is tightly matched with the outer tube seat 7, and the threaded cap 10 can reversely lock the outer tube seat 7 and the middle sleeve seat 6 from bottom to top;

specifically, as shown in fig. 1, 2, 3 and 4, the reversely locked structure of the screw cap 10 avoids the situation that the middle sleeve 2 and the outer tube 1 rotate to screw the structure of the capsular bag 4, which cannot be fully expanded and cannot normally function; and can realize the quick dismantlement of outer tube 1 and well sleeve pipe 2 through above-mentioned screw cap 10, reach the outer tube 1 and withdraw from with well sleeve pipe 2 fast after bone cement pours into and finishes, and the in-process only rotates screw cap 10, avoids rotating bag 4 and damages the centrum.

Example 2: the balloon 4 is fixed in a gap between the middle sleeve 2 and the front end of the outer tube 1, the front end of the balloon 4 is provided with a metal end 13, the metal end 13 and the balloon 4 are bound and fixed by silk threads, and the metal end 13 is internally provided with a groove and is connected with the front end of the inner rod 3;

specifically, as shown in fig. 1, the bag 4 has a double-layer structure, so that the effect of bone cement dispersion is increased, and the condition of bone cement leakage is reduced.

The working principle is as follows: when the utility model is used, the positioning ring 11 outside the outer tube 1 is internally provided with a rubber ring and a screw thread, the screw thread is screwed with the expander to be connected, the position of the bag 4 can be fixed in the operation process, the clamping groove 9 and the tenon 8 are combined to limit the relative displacement between the outer tube seat 7 and the middle sleeve seat 6, the screw cap 10 rotates to realize the quick disassembly of the outer tube 1 and the middle sleeve 2, the bone cement enters the bag 4, the bag 4 adopts a double-layer structure, the bone cement can increase the dispersion effect after entering the bag 4, thus the condition of the bone cement leakage from the bag 4 can be reduced, the safety of the bag 4 is improved, the screw cap 10 is reversely locked, the condition that the bag 4 is screwed by the rotation of the middle sleeve 2 and the outer tube 1 and the bag 4 can not be completely opened and can not normally play a role is avoided, and the quick disassembly of the outer tube 1 and the middle sleeve 2 can be realized by the screw cap 10, after the bone cement is injected, the outer tube 1 and the middle sleeve 2 are quickly withdrawn, and in the process, only the threaded cap 10 is rotated, so that the vertebral body is prevented from being damaged by rotating the sac 4.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a capsular bag, includes outer tube (1), well sleeve pipe (2), interior pole (3), capsular bag (4) and holding ring (11), its characterized in that: the middle sleeve (2) is assembled outside the inner rod (3), the outer tube (1) is assembled outside the middle sleeve (2), the bag (4) is fixed in a gap between the front ends of the middle sleeve (2) and the outer tube (1), the front end of the bag (4) is provided with a metal end (13), the front end of the inner rod (3) penetrates through the inside of the metal end (13) and is fixed with the bag (4), one side of the middle sleeve (2) is provided with a middle sleeve seat (6), the bottom end of the middle sleeve seat (6) is provided with a clamping groove (9), one side of the outer tube (1) is provided with an outer tube seat (7), the outside of the outer tube seat (7) is provided with a threaded cap (10), the outside of the outer tube (1) is provided with a positioning ring (11), and one side of the middle sleeve seat (6) is provided with a through tube screw seat (12).

2. A pouch according to claim 1, wherein: the metal end head (13) and the bag (4) are bound and fixed by silk threads, and a groove is formed in the metal end head (13) and is connected with the front end of the inner rod (3).

3. A pouch according to claim 1, wherein: the bottom end of the middle sleeve seat (6) is cylindrical, and threads are arranged on the periphery of the middle sleeve seat.

4. A pouch according to claim 1, wherein: the outer shape of the middle sleeve seat (6) is provided with a directional mark.

5. A pouch according to claim 1, wherein: the top end of the outer tube seat (7) is provided with a clamping tenon (8), and the clamping tenon (8) is combined with a clamping groove (9) at the bottom of the middle sleeve (2).

6. A pouch according to claim 1, wherein: the thread cap (10) is tightly matched with the outer pipe seat (7), and the thread cap (10) can reversely lock the outer pipe seat (7) and the middle sleeve seat (6) from bottom to top.