CN210962234U

CN210962234U - Capsule cavity puncture outfit

Info

Publication number: CN210962234U
Application number: CN201921313443.0U
Authority: CN
Inventors: 李玉慧; 李江明
Original assignee: Peking University People's Hospital (peking University Second Clinical Medical College)
Current assignee: Peking University People's Hospital (peking University Second Clinical Medical College); Peking University; Peking University Peoples Hospital
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-07-10
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses a capsule cavity puncture outfit relates to medical instrument technical field, including the syringe needle, the cylinder, the nook closing member, negative pressure adjusting device and elasticity fastener, cylinder one end is connected with the syringe needle, cylinder inside seal is provided with the nook closing member, the cylinder outside is equipped with negative pressure adjusting device and elasticity fastener, negative pressure adjusting device takes out the device including pressing handle and nook closing member outward, press handle and nook closing member outward and take out device fixed connection, press the handle and set up outside the cylinder lateral wall, the singlehanded cylinder of holding and pressing down the handle can drive the nook closing member outward and take out the device and take out the needle core outward and make the syringe interior production negative pressure, elasticity fastener fixed connection is on the cylinder and can carry out the joint fixed to the nook closing member of taking out outward. The utility model provides a cyst cavity puncture ware, the cyst cavity of impaling that can be convenient is difficult for forming the damage to the tissue, improves the puncture success rate.

Description

Capsule cavity puncture outfit

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to a sacculus puncture ware.

Background

In the cystic cavity puncture such as joint cavity puncture, most doctors or nurses use the syringe to puncture, however, when the syringe is used to puncture, the negative pressure in the syringe can not be maintained while the needle is inserted; therefore, after the needle completely enters the joint cavity, a doctor cannot know that tissue injury is often caused or the needle penetrates out of the liquid cavity to cause puncture failure when the needle is inserted too deeply. When a doctor or a nurse punctures, when the needle head enters deeper tissues, the needle core of the syringe is withdrawn to generate negative pressure so as to determine whether to enter the joint cavity, and after the needle core enters the joint cavity, a hand for stabilizing the needle cylinder needs to be moved to the position of the needle core for withdrawing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cyst chamber puncture ware to solve the problem that above-mentioned prior art exists, can be convenient pierce the cyst chamber, be difficult for to weaving constitution damage, improve the puncture success rate.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a capsule cavity puncture outfit, including syringe needle, cylinder, nook closing member, negative pressure adjusting device and elasticity fastener, cylinder one end with the syringe needle is connected, cylinder internal seal is provided with the nook closing member, the cylinder outside is equipped with negative pressure adjusting device with the elasticity fastener, negative pressure adjusting device is including pressing handle and nook closing member and taking out the device outward, press the handle with the nook closing member takes out device fixed connection outward, press the handle set up in outside the cylinder lateral wall, singlehanded the cylinder is pressed down press the handle can drive take out the device outward will the nook closing member takes out the messenger outward produce the negative pressure in the cylinder, elasticity fastener fixed connection is in on the cylinder and can be to taking out outward the nook closing member carries out the joint and fixes.

Preferably, the nook closing member includes piston and needle bar, piston fixed connection be in needle bar one end, follow on the needle bar the axial of cylinder is equipped with continuous sawtooth, the nook closing member is gone up to fixed being equipped with elasticity and is pushed away the piece outward, elasticity push away a flexible joint in the tooth's socket of sawtooth, it is close to press the handle the nook closing member is articulated outward the one end of taking out the device on the cylinder, press the handle other end and a return spring's one end fixed connection, return spring other end fixed connection be in on the cylinder, when pressing the handle and not pressing, return spring is in free state.

Preferably, the elasticity pushes away the piece and includes joint piece and joint spring, joint spring one end fixed connection be in on the nook closing member takes out the device outward, the joint spring other end with joint piece fixed connection, joint piece joint in the tooth's socket of sawtooth.

Preferably, the elastic pushing piece comprises a fixing plate and an elastic inclined plate fixedly connected with the fixing plate, the fixing plate is fixedly connected to the stylet outward-drawing device, and the elastic inclined plate is clamped in the tooth grooves of the saw teeth.

Preferably, one end of the elastic clamping piece is fixedly connected to the needle cylinder, and the other end of the elastic clamping piece is elastically clamped in the tooth groove of the sawtooth.

Preferably, the needle cylinder is far away from the one end inside wall of syringe needle is equipped with the stopper, the needle bar includes the body of rod, the body of rod is cross fixed connection by four gusset and forms, one gusset joint is in two between the stopper, with another that the stopper is relative gusset outward flange is equipped with continuous the sawtooth.

Preferably, the needle core outward-drawing device is a ring body, the ring body is sleeved outside the rod body, and the elastic pushing piece is fixedly arranged on the ring body.

Preferably, one end of each rib plate close to the piston is provided with a clamping groove, the clamping groove is matched with the shape of the limiting block, when the clamping groove moves to a position corresponding to the limiting block, the needle rod is rotated in the circumferential direction, the clamping groove can bypass the limiting block, and the sawteeth on the needle rod can be separated from the elastic pushing piece and the elastic clamping piece.

The utility model discloses for prior art gain following technological effect:

the utility model provides a sac cavity puncture outfit, when the sac cavity puncture, after puncturing, the hand holding the needle cylinder can press the pressing handle simultaneously, so that the needle core is drawn out, the elastic clamping piece can clamp and fix the drawn-out needle core, so that negative pressure is generated in the needle cylinder, when the needle point completely enters the sac cavity, the negative pressure in the needle cylinder can draw the liquid in the sac cavity into the needle cylinder, which indicates that the needle has been punctured to the required depth, the needle insertion can be stopped, and doctors or nurses can conveniently puncture the needle head into the sac cavity accurately; then, the hand holding the syringe continuously presses the pressing handle, and the liquid in the capsule cavity can be gradually pumped out until the required amount is reached; in the process of puncturing and extracting, the position of a hand does not need to be moved, and the pressing direction is perpendicular to the long axis of the needle cylinder, so that the puncturing and extracting process of the needle head is more stable, the needle point is prevented from moving in the capsule cavity to a great extent to damage the tissue, the needle point inclined plane can be prevented from exiting the capsule cavity, and the puncturing success rate is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a capsule cavity puncture outfit provided by the present invention;

FIG. 2 is a cross-sectional view of the elastomeric pusher of the balloon puncture instrument of FIG. 1;

FIG. 3 is a cross-sectional view of an alternative arrangement of the resilient pusher member of the capsule penetrator of FIG. 1;

FIG. 4 is a cross-sectional view A-A of the balloon cavity puncture instrument of FIG. 1;

in the figure: 1-needle head, 2-needle cylinder, 3-needle core, 4-negative pressure adjusting device, 5-elastic clamping piece, 6-pressing handle, 7-needle core external drawing device, 8-piston, 9-needle rod, 10-sawtooth, 11-elastic pushing piece, 12-return spring, 13-clamping block, 14-clamping spring, 15-fixing plate, 16-elastic inclined plate, 17-limiting block, 18-rib plate and 19-clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a cyst chamber puncture ware to solve the problem that prior art exists, can be convenient pierce the cyst chamber, be difficult for to weaving constitution damage, improve the puncture success rate.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Example one

As shown in fig. 1, the embodiment provides a capsule cavity puncture outfit, including syringe needle 1, cylinder 2, nook closing member 3, negative pressure adjusting device 4 and

elasticity fastener

5, 2 one end of cylinder are connected with syringe needle 1, 2 internal seal of cylinder is provided with nook

closing member

3, 2 outsides of cylinder are equipped with negative pressure adjusting device 4 and elasticity fastener 5, negative pressure adjusting device 4 includes pressing handle 6 and nook closing member take out device 7 outward, pressing handle 6 and nook closing member take out device 7 fixed connection outward, pressing handle 6 sets up outside 2 lateral walls of cylinder, holding cylinder 2 and pressing handle 6 with one hand can drive nook closing member take out device 7 outward and take out 3 with nook closing member and produce the negative pressure in the cylinder 2, elasticity fastener 5 fixed connection is on cylinder 2 and can carry out the joint fixed to the nook closing member 3 of taking out.

When a sac cavity is punctured, after puncturing, a hand holding the needle cylinder 2 can simultaneously press the pressing handle 6 to enable the needle core 3 to be pulled out, the elastic clamping piece 5 can clamp and fix the pulled-out needle core 3 to enable negative pressure to be generated in the needle cylinder 2, when a needle point completely enters the sac cavity, the negative pressure in the needle cylinder 2 can pump liquid in the sac cavity into the needle cylinder 2, the situation that the needle is punctured to the required depth can be shown, the needle insertion can be stopped, and a doctor or a nurse can conveniently and accurately puncture the needle head 1 into the sac cavity; then, the hand holding the needle cylinder 2 continuously presses the pressing handle 6, and the liquid in the capsule cavity can be gradually pumped out until the required amount is reached; in the process of puncturing and extracting, the position of a hand does not need to be moved, and the pressing direction is perpendicular to the long axis of the needle cylinder 2, so that the puncturing and extracting process of the needle head 1 is more stable, the needle point is prevented from moving in the sac cavity with larger amplitude to cause damage to the tissue, the needle point inclined plane can be prevented from withdrawing from the sac cavity, and the success rate of puncturing is improved.

As shown in fig. 1, the stylet 3 includes a piston 8 and a needle bar 9, the piston 8 is fixedly connected to one end of the needle bar 9, a continuous sawtooth 10 is arranged on the needle bar 9 along the axial direction of the needle cylinder 2, an elastic pushing member 11 is fixedly arranged on the stylet external-drawing device 7, the elastic pushing member 11 is elastically clamped in a tooth groove of the sawtooth 10, one end of the pressing handle 6 close to the stylet external-drawing device 7 is hinged on the needle cylinder 2, the other end of the pressing handle 6 is fixedly connected with one end of a return spring 12, the other end of the return spring 12 is fixedly connected to the needle cylinder 2, and when the pressing handle 6 is not pressed, the return spring 12 is in a free state. Hand of holding cylinder 2 can press simultaneously when handheld cylinder, press handle 6, thereby it is rotatory around the pin joint of pressing handle 6 to drive the nook closing member 7 of taking out outward, elasticity pushes away 11 promotion sawtooth 11 and outwards takes out one section distance after, sawtooth 10 is fixed to elasticity fastener 5 joint, prevent that sawtooth 10 is inwards retracted, make 2 interior negative pressures that produce of cylinder, release presses handle 6 backs, press handle 6 and resume the normal position under return spring 12's resilience effect, it can take out nook closing member 3 to required length to press handle 6 repeatedly.

As shown in fig. 2, the elastic pushing member 11 includes a clamping block 13 and a clamping spring 14, one end of the clamping spring 14 is fixedly connected to the needle core withdrawing device 7, the other end of the clamping spring 14 is fixedly connected to the clamping block 13, and the clamping block 13 is clamped in the tooth groove of the saw tooth 10. The initial state of the clamping spring 14 is in a free or compressed state, under the pressing action of the pressing handle 6, the elastic pushing piece 11 moves outwards, the clamping block 13 pushes the sawteeth 10 to move outwards, after the sawteeth 10 move for a certain distance, the pressing handle 6 is released, the pressing handle 6 returns to the original position under the resilience action of the return spring 12, the elastic pushing piece 11 resets inwards, and under the elastic action of the clamping spring 14, the clamping block 13 can slide to the initial position along the sawteeth 10.

As shown in figure 1, one end of the elastic clamping piece 5 is fixedly connected to the needle cylinder 2, and the other end of the elastic clamping piece 5 is elastically clamped in the tooth groove of the sawtooth 10. The elastic clamping piece 5 is clamped in the tooth groove of the sawtooth 10, so that the sawtooth 10 can be outwards pulled out, the sawtooth 10 can be prevented from inwards retracting, and the existence of negative pressure in the needle cylinder 2 is ensured.

As shown in figures 1 and 4, the inner side wall of one end of the needle cylinder 2 far away from the needle head 1 is provided with a limiting block 17, the needle rod 9 comprises a rod body, the rod body is formed by fixedly connecting four rib plates 18 in a cross shape, one rib plate 18 is clamped between the two limiting blocks 17, and the outer edge of the other rib plate 18 opposite to the limiting blocks 17 is provided with continuous saw teeth 10. The arrangement of the limiting block 17 can ensure that the stylet 3 moves along a straight line in the drawing process and ensure that the elastic pushing piece 11 and the elastic clamping piece 5 keep contact with the sawtooth 10.

As shown in fig. 1-2 and fig. 4, the needle core outward-drawing device 7 is a circular ring body, the circular ring body is sleeved outside the rod body, and an elastic pushing piece 11 is fixedly arranged on the circular ring body. A small hole is formed in the stylet outward-drawing device 7, the clamping spring 14 and the clamping block 13 are both arranged in the small hole, and the clamping block 13 can axially reciprocate along the small hole.

As shown in fig. 1, one end of each rib plate 18 close to the piston 8 is provided with a clamping groove 19, the clamping groove 19 is matched with the shape of the limiting block 17, when the clamping groove 19 moves to a position corresponding to the limiting block 17, the needle rod 9 is rotated in the circumferential direction, the clamping groove 19 can bypass the limiting block 17, so that the sawteeth 10 on the needle rod 9 can be separated from the elastic pushing piece 11 and the elastic clamping piece 5, and further the needle core 3 can be pushed into the needle cylinder 2 to push out the liquid in the needle cylinder 2, so as to obtain a required liquid specimen, at this time, the capsule cavity puncture outfit in the embodiment can also be used as a common injector for medicine pushing.

Example two

As shown in fig. 3, the present embodiment provides a capsule cavity puncturing device, which is different from the capsule cavity puncturing device provided in the first embodiment in that the elastic pushing element 11 includes a fixed plate 15 and an elastic sloping plate 16 fixedly connected to the fixed plate 15, the fixed plate 15 is fixedly connected to the needle core withdrawing device 7, and the elastic sloping plate 16 is clamped in the tooth socket of the saw tooth 10. Under the pressing action of the pressing handle 6, the elastic pushing piece 11 moves outwards, the elastic sloping plate 16 pushes the sawteeth 10 to move outwards, after the sawteeth 10 move for a certain distance, the pressing handle 6 is released, the pressing handle 6 recovers to the original position under the rebounding action of the return spring 12, the elastic pushing piece 11 resets inwards, and under the elastic action of the elastic sloping plate 16, the elastic sloping plate 16 can slide to the initial position along the sawteeth 10.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A capsule cavity puncture outfit, which is characterized in that: including syringe needle, cylinder, nook closing member, negative pressure adjusting device and elasticity fastener, cylinder one end with the syringe needle is connected, cylinder internal seal is provided with the nook closing member, the cylinder outside is equipped with negative pressure adjusting device with the elasticity fastener, negative pressure adjusting device is including pressing handle and nook closing member and taking out the device outward, press the handle with the nook closing member takes out device fixed connection outward, press the handle set up in outside the cylinder lateral wall, the singlehanded the cylinder is pressed down press the handle can drive the nook closing member will the nook closing member takes out outward and makes production negative pressure in the cylinder, elasticity fastener fixed connection be in on the cylinder and can be to taking out outward the nook closing member carries out the joint fixed.

2. The capsule cavity puncture outfit of claim 1, wherein: the nook closing member includes piston and needle bar, piston fixed connection be in needle bar one end, follow on the needle bar the axial of cylinder is equipped with continuous sawtooth, the nook closing member is gone up to fixed being equipped with elasticity pushing away piece outward, elasticity pushing away an elastic joint in the tooth's socket of sawtooth, it is close to press the handle the nook closing member is articulated outward the one end of taking out the device articulate on the cylinder, press the handle other end and a return spring's one end fixed connection, return spring other end fixed connection be in on the cylinder, when pressing the handle and not pressing, return spring is in free state.

3. The capsule cavity puncture outfit of claim 2, wherein: the elastic pushing piece comprises a clamping block and a clamping spring, one end of the clamping spring is fixedly connected to the needle core outward-drawing device, the other end of the clamping spring is fixedly connected with the clamping block, and the clamping block is clamped in the tooth grooves of the sawteeth.

4. The capsule cavity puncture outfit of claim 2, wherein: the elastic pushing piece comprises a fixed plate and an elastic inclined plate fixedly connected with the fixed plate, the fixed plate is fixedly connected to the needle core outward-drawing device, and the elastic inclined plate is clamped in the tooth grooves of the saw teeth.

5. The capsule cavity puncture outfit of claim 2, wherein: one end of the elastic clamping piece is fixedly connected to the needle cylinder, and the other end of the elastic clamping piece is elastically clamped in the tooth groove of the sawtooth.

6. The capsule cavity puncture outfit of claim 2, wherein: the needle cylinder is far away from the one end inside wall of syringe needle is equipped with the stopper, the needle bar includes the body of rod, the body of rod is cross fixed connection by four gusset and forms, one the gusset joint is in two between the stopper, with another that the stopper is relative the gusset outward flange is equipped with continuous the sawtooth.

7. The capsule cavity puncture outfit of claim 6, wherein: the needle core outward-drawing device is a ring body, the ring body is sleeved outside the rod body, and the elastic pushing piece is fixedly arranged on the ring body.

8. The capsule cavity puncture outfit of claim 7, wherein: and one end of each rib plate, which is close to the piston, is provided with a clamping groove, the clamping groove is matched with the shape of the limiting block, when the clamping groove moves to a position corresponding to the limiting block, the needle rod is rotated in the circumferential direction, and the clamping groove can bypass the limiting block, so that the sawteeth on the needle rod can be separated from the elastic pushing piece and the elastic clamping piece.