CN210124794U

CN210124794U - Puncture needle for renal therapy

Info

Publication number: CN210124794U
Application number: CN201920163433.7U
Authority: CN
Inventors: 唐玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-03-06
Anticipated expiration: 2029-01-30

Abstract

The utility model relates to a pjncture needle technical field, specific a pair of puncture needle is used in kidney therapy that discloses, including outer needle tubing, interior needle file and handle, outer needle tubing and outer needle file fixed connection are provided with the baffle in the outer needle file, have seted up centre bore and two locating holes on the baffle. The center of the upper surface of the inner needle base is vertically connected with an inner needle tube. Be fixed with the flexible pole on the inner needle seat, the flexible pole includes telescopic link, flexible cover and dead lever, and the dead lever upper end is provided with flexible cover, and the inside nestification of flexible cover has the telescopic link, and the inside nestification of telescopic link has well core rod, and nested spring has on the well core rod between telescopic link and the dead lever. The fixed chamber that is provided with in lower surface central point of interior needle file puts, and fixed intracavity portion is provided with the internal thread, and the top intermediate position of handle is fixed and is provided with the fixed head, and the fixed head nestification is inside fixed intracavity. The utility model discloses the advantage: simple structure, easy operation, good stability, less pain in puncture, convenient disassembly and assembly and convenient popularization and application.

Description

Puncture needle for renal therapy

Technical Field

The utility model relates to a puncture needle technical field, in particular to a puncture needle for renal therapy.

Background

The kidney is an important organ of a human body, has a complex structure and is multifunctional, and the examination and pathological diagnosis of renal puncture living tissues are an important component in the current nephrology, an important branch of the pathology and an essential means for diagnosing the kidney diseases; renal biopsy, also known as renal biopsy, is a renal puncture; the development of renal biopsy can help a clinician to make a diagnosis and treatment plan; the existence, pathological type and severity of rejection reaction of transplanted kidney can be determined, and clear pathological diagnosis can be made on acute tubular necrosis, cyclosporin poisoning, recurrence and recurrent glomerulonephritis of transplanted kidney. The existing puncture needle is simple in structure and comprises an outer needle tube and an inner needle tube, the outer needle tube and the inner needle tube are fixedly connected and are not easy to detach, and therefore the puncture needle is inconvenient to clean.

Chinese patent (publication No. CN 206491850U, bulletin date: 2017.09.15) discloses a kidney therapy puncture needle, which comprises an outer needle base, wherein the center of the left side of the outer needle base is communicated with an outer needle tube, the right side of the outer needle base is fixedly connected with a fixing ring, the center of the right side of the outer needle base is provided with a puncture needle hole, the top and the bottom of the right side of the outer needle base are respectively provided with a clamping hole, the inner cavity of the fixing ring is provided with an inner needle base, the right side of the inner needle base extends to the outside of the fixing ring, and the center of the left side of. The puncture needle has a complex structure, is inconvenient to fix and is not suitable for popularization and implementation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a puncture needle for renal therapy to solve the problem that proposes among the above-mentioned background art.

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

a puncture needle for renal therapy comprises an outer needle tube, an inner needle tube, an outer needle base, an inner needle base and a handle. The outer needle tube is fixedly and vertically connected with the cylindrical outer needle seat. Be provided with the baffle in the outer needle file, the center department of baffle has seted up the centre bore, and the side of centre bore is even on the baffle has seted up two locating holes, and the inside wall of outer needle file is provided with the internal thread. The center of the upper surface of the inner needle base is vertically connected with an inner needle tube which is nested in the outer needle tube.

The upper surface radial position of interior needle file be fixed with vertical elastic rod, the elastic rod include telescopic link, telescope tube and dead lever. The lower end of the fixed rod is fixedly connected with the inner needle seat, and the fixed rod is of a hollow structure. The flexible chamber has been seted up to the inside of flexible cover, and flexible chamber is thick two thin cylindric structures in the middle of, and the dead lever nestification is at flexible chamber lower extreme, and the dead lever can freely slide at flexible intracavity. A limiting block is fixed on the outer side wall of the top end of the fixing rod, and the limiting block has the function of limiting the fixing rod to slide, so that the fixing rod is prevented from sliding out of the telescopic cavity. The nested telescopic link that has in the upper end in flexible chamber, the telescopic link is hollow structure, the fixed stopper that is provided with of bottom lateral wall of telescopic link, the stopper has the gliding effect of restriction telescopic link, avoid the flexible chamber of telescopic link roll-off, telescopic link and the inside nested well core rod that has of dead lever, well core rod can freely slide in telescopic link and dead lever, nested on the well core rod between telescopic link and the dead lever has the spring, the spring has the supporting role to telescopic link and dead lever. The outer surface of the inner needle base is provided with external threads, and the external threads on the inner needle base can be nested in the internal threads of the outer needle base, so that the outer needle base and the inner needle base are fixed.

The center of the lower surface of the inner needle base is fixedly provided with a cylindrical fixed cavity, and an internal thread is arranged in the fixed cavity. The fixed head that is provided with of top intermediate position of handle, fixed head nestification is inside fixed intracavity, the fixed head outside is provided with the external screw thread, through twisting fixed chamber and fixed head relatively, can accomplish fixed chamber and fixed head fixed with break away from.

As a further aspect of the present invention: the positioning hole is composed of a circular part and an arc part, and the arc part takes the central hole as the center of a circle.

As a further aspect of the present invention: the inner end part of the inner needle tube is provided with a return hook, and the arrangement of the return hook can reduce the pain of patients caused by the insertion of the outer needle tube and the inner needle tube into the body.

As a further aspect of the present invention: the outer needle base is internally provided with an arc-shaped track, when the elastic rod is inserted into the outer needle base, the top of the elastic rod is inserted into the track, and when the inner needle base rotates, the elastic rod slides in the track.

As a further aspect of the present invention: the outer surface of the handle is provided with the rubber layer, and the friction force of the handle is increased due to the arrangement of the rubber layer, so that the handle is more comfortable to take.

As a further aspect of the present invention: the fixed rod is fixedly connected with the telescopic sleeve, the top end of the fixed rod is fixedly connected with the bottom of the central rod, and the central rod is nested in the telescopic rod. In the use process, the length of the fixing rod is kept unchanged, and the inner needle seat and the outer needle seat can be fixed better.

Compared with the prior art, the beneficial effects of the utility model are that: the return hook is arranged at the end part of the inner needle tube, so that the pain of a patient during puncture is greatly reduced. The handle is used, so that the operation of the puncture needle is convenient. The elastic rod is matched with the positioning hole, so that the outer needle base and the inner needle base can be well fixed and separated, and the puncture needle is convenient to use and clean. The threads are arranged between the outer needle seat and the inner needle seat, so that double fixation is realized, and the outer needle seat and the inner needle seat are more stably fixed. The utility model discloses the advantage: simple structure, easy operation, good stability, less pain in puncture, convenient disassembly and assembly and convenient popularization and application.

Drawings

Fig. 1 is a schematic structural view of a puncture needle for renal therapy.

Fig. 2 is a schematic view of the structure of the outer needle holder in the renal therapy puncture needle.

Fig. 3 is a schematic structural view of an elastic rod in a puncture needle for renal therapy.

In the figure, an outer needle tube 1, a return hook 2, an inner needle tube 3, a track 4, an outer needle seat 5, an elastic rod 6, a positioning hole 7, an inner needle seat 8, a fixing cavity 9, a partition plate 10, a central hole 11, a rubber layer 12, a handle 13, a fixing head 14, a telescopic rod 15, a telescopic cavity 16, a telescopic sleeve 17, a central rod 18, a spring 19, a limiting block 20 and a fixing rod 21.

Detailed Description

In order to clearly understand the technical features, objects and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

Example 1

Referring to fig. 1-3, a puncture needle for renal therapy comprises an outer needle tube 1, an inner needle tube 3, an outer needle base 5, an inner needle base 8 and a handle 13. The outer needle tube 1 is fixedly and vertically connected with the outer needle seat 5. The outer needle base 5 is a cylindrical structure. A partition plate 10 is arranged in the outer needle base 5, a center hole 11 is formed in the center of the partition plate 10, two positioning holes 7 are uniformly formed in the partition plate 10 on the side edge of the center hole 11, each positioning hole 7 is formed by a circular portion and an arc portion, and the arc portion takes the center hole 11 as the circle center. The inner side wall of the outer needle base 5 is provided with internal threads. The central position of the upper surface of the inner needle seat 8 is vertically connected with an inner needle tube 3, the inner needle tube 3 is nested inside the outer needle tube 1, the inner end part of the inner needle tube 3 is provided with a return hook 2, and the arrangement of the return hook 2 can reduce the pain of a patient caused by the insertion of the outer needle tube 1 and the inner needle tube 3 into the body.

The upper surface radial position of interior needle file 8 be fixed with vertical elastic rod 6, be provided with curved track 4 in the outer needle file 5, when elastic rod 6 inserted in outer needle file 5, in the track 4 is inserted at the 6 tops of elastic rod, when interior needle file 8 rotated, elastic rod 6 slided in track 4. The elastic rod 6 comprises an expansion rod 15, an expansion sleeve 17 and a fixed rod 21. The lower end of the fixed rod 21 is fixedly connected with the inner needle seat 8, and the fixed rod 21 is of a hollow structure. Flexible chamber 16 has been seted up to the inside of flexible cover 17, and flexible chamber 16 is thick two thin cylindric structure in the middle of for flexible chamber 16, and dead lever 21 nestification is in flexible chamber 16 lower extreme, and dead lever 21 can freely slide in flexible chamber 16. The top end lateral wall of dead lever 21 is fixed with stopper 20, and stopper 20 has the gliding effect of restriction dead lever 21, avoids dead lever 21 roll-off flexible chamber 16. Telescopic link 15 has been nested in the upper end in flexible chamber 16, telescopic link 15 is hollow structure, the fixed stopper 20 that is provided with of bottom lateral wall of telescopic link 15, stopper 20 has the gliding effect of restriction telescopic link 15, avoid the flexible chamber 16 of telescopic link 15 roll-off, telescopic link 15 and the inside nestification of dead lever 21 have well core rod 18, well core rod 18 can freely slide in telescopic link 15 and dead lever 21, nested spring 19 on well core rod 18 between telescopic link 15 and the dead lever 21, spring 19 has the supporting role to telescopic link 15 and dead lever 21. The outer surface of the inner needle base 8 is provided with external threads, and the external threads on the inner needle base 8 can be nested in the internal threads of the outer needle base 5, so that the outer needle base 5 and the inner needle base 8 are fixed.

The center of the lower surface of the inner needle base 8 is fixedly provided with a cylindrical fixed cavity 9, and an internal thread is arranged inside the fixed cavity 9. The middle position of the top of the handle 13 is fixedly provided with a fixed head 14, the fixed head 14 is embedded in the fixed cavity 9, the outer part of the fixed head 14 is provided with an external thread, and the fixed cavity 9 and the fixed head 14 can be fixed and separated by screwing the fixed cavity 9 and the fixed head 14 relatively. The rubber layer 12 is arranged on the outer surface of the handle 13, and the friction force of the handle 13 is increased by the rubber layer 12, so that the handle 13 is more comfortable to take.

The utility model discloses a theory of operation is: when in use, the fixing head 14 is screwed in the fixing cavity 9 to complete the fixation of the handle 13 and the inner needle base 8. The inner needle tube 3 penetrates through the center hole 11 and is inserted into the outer needle tube 1, the elastic rod 6 is aligned to the circular part of the positioning hole 7, the telescopic sleeve 17 is clamped on the circular part of the positioning hole 7 at the moment, the inner needle base 8 is slightly pressed to enable the telescopic rod 15 to be retracted into the telescopic cavity 16, the fixing rod 21 enters the circular part of the positioning hole 7, the inner needle base 8 is rotated, the fixing rod 21 enters the arc-shaped part of the positioning hole 7, the telescopic sleeve 17 is clamped on the upper part of the positioning hole 7, and the inner needle base 8 is fixed with the outer needle base 5 through. When disassembly is required, the inner needle seat 8 is rotated reversely, the fixing rod 21 enters the circular part, the outer needle seat 5 is separated from the inner needle seat 8 through threads, and the inner needle seat 8 is separated from the outer needle seat 5 under the elastic force of the spring 19.

Example 2

On the basis of the embodiment 1, the fixing rod 21 is fixedly connected with the telescopic sleeve 17, the top end of the fixing rod 21 is fixedly connected with the bottom of the central rod 18, and the central rod 18 is nested inside the telescopic rod 15. In the using process, the length of the fixing rod 21 is kept unchanged, and the inner needle seat 8 and the outer needle seat 5 can be fixed better.

The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A puncture needle for renal therapy comprises an outer needle tube (1), an inner needle tube (3), an outer needle base (5), an inner needle base (8) and a handle (13), wherein the outer needle tube (1) is fixedly and vertically connected with the cylindrical outer needle base (5), a partition plate (10) is arranged in the outer needle base (5), a center hole (11) is formed in the center of the partition plate (10), two positioning holes (7) are uniformly formed in the partition plate (10) on the side edge of the center hole (11), internal threads are formed in the inner side wall of the outer needle base (5), the inner needle tube (3) is vertically connected to the center position of the upper surface of the inner needle base (8), and the inner needle tube (3) is nested in the outer needle tube (1), and the puncture needle is characterized in that a return hook (2) is arranged at the inner end of the inner needle;

a vertical elastic rod (6) is fixed on the upper surface of the inner needle base (8) in a radial position, the elastic rod (6) comprises a telescopic rod (15), a telescopic sleeve (17) and a fixed rod (21), the lower end of the fixed rod (21) is fixedly connected with the inner needle base (8), the upper end of the fixed rod (21) is provided with the telescopic sleeve (17), a telescopic cavity (16) is formed in the telescopic sleeve (17), the upper end of the telescopic cavity (16) is nested with the telescopic rod (15), the telescopic rod (15) is of a hollow structure, the outer side wall of the bottom of the telescopic rod (15) is fixedly provided with a limiting block (20), a central rod (18) is nested in the telescopic rod (15), and a spring (19) is nested on the central rod (18) between the telescopic rod (15) and;

the outer surface of inner needle seat (8) be provided with the external screw thread, the lower surface central point of inner needle seat (8) puts the fixed cylindric fixed chamber (9) that is provided with, fixed chamber (9) inside is provided with the internal thread, the fixed head (14) that is provided with in top intermediate position of handle (13), fixed head (14) nestification is inside fixed chamber (9), fixed head (14) outside is provided with the external screw thread.

2. A puncture needle for renal therapy according to claim 1, wherein the positioning hole (7) is formed of a circular portion and an arc portion, the arc portion being centered on the central hole (11).

3. The puncture needle for renal therapy according to claim 2, wherein the fixing rod (21) is a hollow structure, the fixing rod (21) is nested at the lower end of the telescopic cavity (16), and the limiting block (20) is fixed on the outer side wall of the top end of the fixing rod (21).

4. A puncture needle for renal therapy according to claim 3, wherein the fixing rod (21) is fixedly connected to the telescopic sleeve (17), and the top end of the fixing rod (21) is fixedly connected to the bottom of the central rod (18).

5. A puncture needle for renal therapy according to claim 3 or 4, wherein the flexible chamber (16) has a cylindrical structure with a thick middle part and two thin ends.

6. A puncture needle for renal therapy according to claim 5, characterized in that the outer needle holder (5) is provided with an arc-shaped track (4).

7. A puncture needle for renal therapy according to claim 6, wherein the outer surface of the handle (13) is provided with a rubber layer (12).