CN218960880U

CN218960880U - PTC puncture needle for cyst hardening

Info

Publication number: CN218960880U
Application number: CN202320084524.8U
Authority: CN
Inventors: 王晓涛; 孟彬
Original assignee: Zhejiang rongjun hospital
Current assignee: Zhejiang rongjun hospital
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-05
Anticipated expiration: 2033-01-29

Abstract

The utility model provides a PTC puncture needle for cyst sclerosis, which solves the problems of secondary injury and the like caused by cyst puncture, and comprises a puncture outer tube, wherein the front end of the puncture outer tube is provided with a sharp puncture part, an inner tube body is arranged in the puncture outer tube in a sliding manner, and an expandable and contractible ball cage is fixed at one end of the inner tube body opposite to the puncture part of the puncture outer tube. The utility model has the advantages of high use safety, good structural stability and the like.

Description

PTC puncture needle for cyst hardening

Technical Field

The utility model belongs to the technical field of PTC puncture, and particularly relates to a PTC puncture needle for cyst hardening.

Background

The ultrasonic guided cyst puncture hardening treatment has been developed for decades, has now become very mature and has definite curative effect, and is widely applied to the treatment of cysts at the liver, kidney, ovary and other parts. Percutaneous transhepatic cholangiography uses a puncture needle with a plastic tube outer sheath or a Chiba fine puncture needle, punctures an intrahepatic bile duct from a right axillary midline or a front side path under the monitoring and guidance of an X-ray television or a B-type ultrasonic instrument, and then the intrahepatic bile duct can be clearly displayed by injecting a contrast agent, so that the lesion part, degree and range in the bile duct can be known, and the jaundice identification is facilitated. Is mainly used for patients with obstructive jaundice to understand the obstruction parts, scope and reasons of biliary tract. At present, the front end of the PTC puncture needle for cyst puncture hardening is smooth and sharp, and when cyst liquid is pumped out, the needle is easy to drop off or puncture the cyst to enter normal tissues, bleeding is caused or hardening agent is injected outside the cyst, complications are caused, meanwhile, the needle is easy to block (the needle point is stuck or the dropped off broken tissues are caused), and the needle point is not clear.

In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses a puncture indwelling trocar [202122319504.8] for cyst sclerosis treatment, which comprises a puncture needle hard needle core, wherein a hose is covered outside the puncture needle hard needle core, after the puncture needle enters a capsule cavity, the hard needle core is pulled out, the hose is left, the hose is of a double-layer structure, the hose comprises an inner hose covering the puncture needle hard needle core and an outer hose arranged outside the inner hose, and the wall of the outer hose, which is close to a needle point, of the outer hose is thinner than other parts.

The scheme solves the problem that the puncture needle point is easy to deviate from to a certain extent, but the scheme still has a plurality of defects, such as the problem that the tip of the needle point is easy to damage cyst and the like.

Disclosure of Invention

The utility model aims at solving the problems and provides the PTC puncture needle for hardening cysts, which is reasonable in design and difficult to cause secondary damage to cysts by the tip of the needle tip.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a PTC puncture needle for cyst sclerosis comprises a puncture outer tube, wherein the front end of the puncture outer tube is provided with a sharp puncture part, an inner tube body is slidably arranged in the puncture outer tube, and an expandable and contractible ball cage is fixed at one end of the inner tube body opposite to the puncture part of the puncture outer tube. The ball cage is ejected out of the puncture part and then expands to cover the puncture part of the puncture outer tube, so that the damage to the cyst caused by the puncture part is avoided, and meanwhile, the port of the puncture outer tube is sealed by the ball cage, so that the plugging of the puncture outer tube caused by falling of human tissues is effectively avoided.

In the PTC puncture needle for cyst sclerosis, the ball cage is made of flexible materials and is provided with a plurality of deformation parts which are symmetrical relative to the central axis of the inner tube body, and the deformation parts synchronously shrink and expand. The deformation part ensures the balance of the ball cage during expansion, and the synchronous expansion deformation ensures the consistent outer diameter.

In the above-mentioned PTC needle for cyst sclerosis, a deformation chamber communicating with each deformation portion is provided inside the ball cage. The deformation cavity inside the ball cage is connected with each deformation part in parallel, and a certain shrinkage space is provided for the ball cage, so that the puncture outer tube can be ensured to accommodate the ball cage.

In the above-mentioned PTC puncture needle for cyst sclerosis, the puncture outer tube and the inner tube are made of hard materials, and the ball cage is pneumatically or hydraulically driven to expand and contract. The puncture outer tube and the inner tube body are kept consistent, normal telescopic movement of the inner tube body is not influenced, and a proper driving mode is selected according to actual needs.

In the PTC puncture needle for cyst sclerosis, the maximum outer diameter of the expanded ball cage is larger than the pipe diameter of the puncture outer pipe, and the minimum outer diameter of the contracted ball cage is smaller than the pipe diameter of the puncture outer pipe. The deformation range of the ball cage meets the sliding requirement of the ball cage on the puncture outer tube plug and the inner tube body.

In the PTC puncture needle for the cyst sclerosis, the central axes of the puncture outer tube and the inner tube body are matched, a gap is reserved between the puncture outer tube and the inner tube body, and the length of the inner tube body is larger than that of the puncture outer tube. The clearance between the puncture outer tube and the inner tube body is used for the puncture outer tube to normally extract the cyst fluid.

In the above-described PTC puncture needle for cyst sclerosis, the balloon is inflated and then pressed against the puncture part. The ball cage and the puncture part are mutually attached to avoid the tip of the puncture part from being in direct contact with the ball cage, so that the ball cage is well protected.

In the PTC puncture needle for the cyst hardening, a filtering port is reserved at the joint of the puncture outer tube and the expanded ball cage. The filtering port plays a corresponding role in filtering, and is beneficial to dilution of the ovarian endometriosis cyst thick cyst fluid.

In the above-mentioned PTC puncture needle for cyst sclerosis, the puncture outer tube is axially provided with indication marks. The indication scale facilitates timely observation of the puncture depth of the puncture outer tube relative to the cyst in the operation process, and secondary damage caused by excessive puncture is avoided.

In the PTC puncture needle for cyst sclerosis, the puncture seat is arranged at the rear end of the puncture outer tube, and the adapter seat is arranged at the rear end of the inner tube body. The puncture seat and the adapter seat limit the sliding range of the inner tube relative to the puncture outer tube, so that excessive movement of the ball cage is avoided on one hand, and the inner tube body is prevented from completely falling off from the puncture outer tube on the other hand.

Compared with the prior art, the utility model has the advantages that: the ball cage can expand and contract to cover the puncture part at the end of the puncture outer tube, so that the puncture outer tube is prevented from damaging the cyst or accidentally slipping after extracting the cyst fluid; the ball cage expands and contracts synchronously along the circumferential direction, and a filtering port between the ball cage and the puncture part filters the bag liquid, so that the puncture outer tube is prevented from being blocked by chips; a gap is reserved between the puncture outer tube and the inner tube body, so that the sliding stability of the inner tube body is ensured.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a partial cross-sectional view of the present utility model.

Fig. 3 is an enlarged view of a portion of the present utility model.

Fig. 4 is another partial cross-sectional view of the present utility model.

In the figure, an outer puncture tube 1, an indication scale 11, a puncture seat 12, an adapter seat 13, a puncture part 2, an inner tube 3, a ball cage 4, a deformation part 41, a deformation cavity 42 and a filter port 43.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

As shown in fig. 1, a PTC puncture needle for curing cyst sclerosis comprises a puncture outer tube 1 communicated with a liquid pumping or injecting device, wherein a sharp puncture part 2 is arranged at the front end of the puncture outer tube 1 and is used for puncturing the cyst, and after puncture is completed, a contrast agent is injected towards the inside of the cyst through the puncture outer tube 1, so that X-ray imaging can be realized. The inner tube body 3 is slidably arranged in the puncture outer tube 1, and meanwhile, the inner tube body 3 is kept isolated from the inner wall of the puncture outer tube 1, so that normal liquid pumping or liquid injection of the puncture outer tube 1 is not influenced. The inner tube 3 is fixed with the expandable and contractible ball cage 4 with the relative one end of the puncture portion 2 of puncture outer tube 1, and when inner tube 3 slides and drives ball cage 4 to push out from puncture portion 2, puncture portion 2 inflation seals the port of puncture portion 2, plays the limiting displacement simultaneously and avoids puncture outer tube 1 to slip from in the cyst.

As shown in fig. 2, the ball cage 4 is spherical after being fully expanded, and is conveniently stored into the puncture outer tube 1 in a shuttle-shaped manner in a contracted state, and is ejected to expand after the puncture of the puncture outer tube 1 is completed, so that the ball cage 4 in the puncture outer tube 1 plays a better role in blocking in the puncture process, and the bag liquid or other fragment tissues are prevented from flowing out of the puncture outer tube 1. The ball cage 4 is made of flexible materials and is provided with a plurality of deformation parts 41 which are symmetrical relative to the central axis of the inner pipe body 3, and the deformation parts 41 synchronously shrink and expand. Support ribs are provided between adjacent deformation portions 41 to maintain the cage-like structure thereof.

In depth, since the cage 4 needs to maintain a certain deformation range, it is usually a hollow structure, but in order to guide its deformation mode, the deformation portion 41 is used to support the whole cage 4, the deformation cavity 42 communicating with each deformation portion 41 is provided inside the cage 4, the expansion moment is uniformly dispersed into each deformation portion 41 by the deformation cavity 42, and a valve structure is provided between the deformation cavity 42 and the deformation portion 41.

Further, in order to maintain the structural strength of the puncture outer tube 1 during the puncture, the puncture outer tube 1 and the inner tube body 3 are made of hard materials to avoid deformation and bending, and the ball cage 4 is pneumatically or hydraulically driven to expand and contract. The operator selects a proper driving mode according to actual needs, and the ball cage 4 is made of flexible materials, so that the expansion and contraction allowance is large.

Furthermore, the maximum outer diameter of the expanded ball cage 4 is larger than the pipe diameter of the puncture outer pipe 1 to ensure that the puncture part 2 can be completely covered, the minimum outer diameter of the contracted ball cage 4 is smaller than the pipe diameter of the puncture outer pipe 1 to ensure that the ball cage 4 can be normally contained in the puncture outer pipe 1, and when the ball cage 4 is contained in the puncture outer pipe 1, the inner pipe body 3 slightly expands under the action of a driving structure to completely seal the puncture outer pipe 1.

As shown in fig. 4, the central axes of the puncture outer tube 1 and the inner tube body 3 are combined and a gap is reserved between the puncture outer tube and the inner tube body, and when the ball cage 4 is in a completely contracted state, a certain gap is reserved between the ball cage 4 and the support of the puncture outer tube 1, so that liquid suction is facilitated. The length of the inner pipe body 3 is greater than that of the puncture outer pipe 1, and when the inner pipe body 3 slides further relative to the puncture outer pipe 1, a gap is reserved between the ball cage 4 and the puncture part 2, so that normal liquid pumping or liquid injection of the puncture outer pipe 1 is not affected.

Meanwhile, the end face of the puncture part 2 is of an inclined surface structure, the ball cage 4 is attached to the puncture part 2 and pressed after being expanded, the tip of the puncture part 2 does not directly lean against the surface of the ball cage 4, and the ball cage 4 is slightly offset relative to the central axis of the puncture part 2 when in a pressed state.

Therefore, since the ball cage 4 has a plurality of deformation parts 41 with central symmetry, strip-shaped gaps are reserved between the outer sides of the adjacent deformation parts 41, and when the ball cage is attached to the port of the puncture outer tube 1, a filtering port 43 is reserved at the joint of the puncture outer tube 1 and the expanded ball cage 4 to filter the large-volume cyst fragment tissues.

Obviously, the puncture outer tube 1 has the indication scale 11 along axial evenly distributed, and the operator adopts the visual mode to judge the puncture degree of depth of puncture outer tube 1 in the puncture in-process, and the puncture outer tube 1 selects transparent material simultaneously, can observe interior body 3 sliding condition, in time controls interior body 3's sliding quantity through interior body 3 surface's sign scale.

As shown in fig. 3, the rear end of the puncture outer tube 1 is provided with a puncture seat 12 for connecting with other pipeline structures, the rear end of the inner tube body 3 is provided with a adapter seat 13 for connecting with a corresponding driving structure, and the inner tube body 3 is driven to slide further by adopting a manual or automatic driving structure.

In summary, the principle of this embodiment is as follows: the inner tube 3 end head of the sliding installation of the puncture outer tube 1 is provided with the expandable and contractible ball cage 4, when the puncture outer tube 1 finishes the puncture of the cyst, the ball cage 4 is ejected out from the port of the puncture part 2 and expands to seal the cyst, so that the end head of the puncture part 2 is coated while the puncture outer tube 1 is prevented from slipping off, and secondary puncture damage to the cyst is avoided.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the outer penetration tube 1, the indicating scale 11, the penetration holder 12, the adapter holder 13, the penetration portion 2, the inner tube body 3, the ball cage 4, the deformation portion 41, the deformation chamber 42, the filter port 43 are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The PTC puncture needle for cyst sclerosis comprises a puncture outer tube (1) and a sharp puncture part (2) arranged at the front end of the puncture outer tube (1), and is characterized in that an inner tube body (3) is slidably arranged in the puncture outer tube (1), and an expandable and contractible ball cage (4) is fixed at one end, opposite to the puncture part (2) of the puncture outer tube (1), of the inner tube body (3).

2. The PTC puncture needle for cyst sclerosis according to claim 1, wherein the ball cage (4) is made of flexible material and is provided with a plurality of deformation parts (41) symmetrical relative to the central axis of the inner tube body (3), and the deformation parts (41) synchronously shrink and expand.

3. A cyst hardening use PTC needle according to claim 2, wherein the ball cage (4) is internally provided with deformation cavities (42) communicating with the respective deformation parts (41).

4. A PTC puncture needle for cyst sclerosis according to claim 1, wherein the puncture outer tube (1) and the inner tube body (3) are made of hard materials, and the ball cage (4) is inflated and contracted by pneumatic or hydraulic drive.

5. A PTC needle for use in connection with cyst stiffening according to claim 1, wherein the maximum outer diameter of the balloon (4) after inflation is larger than the diameter of the outer tube (1) and the minimum outer diameter of the balloon (4) after deflation is smaller than the diameter of the outer tube (1).

6. A PTC puncture needle for cyst sclerosis according to claim 1, characterized in that the puncture outer tube (1) is in fit with the central axis of the inner tube (3) with a gap left between them, the length of the inner tube (3) is larger than the length of the puncture outer tube (1).

7. A PTC puncture needle for cyst sclerosis according to claim 1, characterized in that the ball cage (4) is pressed against the puncture part (2) after expansion.

8. A PTC needle for use in connection with cyst stiffening according to claim 7, wherein the junction of the outer tube (1) with the expanded ball cage (4) is provided with a filter port (43).

9. A cystic sclerosis using PTC puncture needle according to claim 1, characterized in that the puncture outer tube (1) is axially distributed with indication graduations (11).

10. A PTC puncture needle for cyst sclerosis according to claim 1, wherein the puncture seat (12) is mounted at the rear end of the puncture outer tube (1), and the adapter seat (13) is mounted at the rear end of the inner tube (3).