CN209770422U - kidney puncture device - Google Patents

Abstract

The utility model discloses a kidney puncture device, which comprises a kidney puncture gun (1) and a positioning component (2) which are detachably connected, wherein the positioning component (2) is used for assisting in positioning the position of the kidney puncture gun; the kidney puncture gun (1) comprises a shell (11), an ejection component arranged in the shell (11) and a needle body arranged at the bottom end of the ejection component; the needle body comprises an inner needle (15) and an outer sleeve (16) which are concentrically arranged, the inner needle (15) is a solid needle, and the top end of the inner needle is of a straight structure; the positioning assembly (2) comprises a mounting plate (21) and supports (22) arranged on two sides of the mounting plate, and guide rails (23) are arranged on the supports (22) so that the mounting plate (21) can move up and down along the guide rails. The utility model discloses a kidney puncture device, simple structure, convenient operation, the accuracy of puncture is high, and the puncture is fast, can improve diagnostic correct rate.

Description

kidney puncture device

Technical Field

The utility model relates to a nephrology dept medical equipment technical field, concretely relates to kidney piercing depth.

background

Renal biopsy, also known as renal biopsy, is a renal biopsy, because of the wide variety of renal diseases, complex etiology and pathogenesis, and the clinical manifestations of many renal diseases are not completely consistent with the histological changes of the kidney, in order to clarify the etiology and pathology of the disease, it is necessary to perform renal biopsy to further determine the specific disease type of the patient.

In recent years, the results of renal pathological examination have become the golden index for diagnosing renal diseases, and the clinical significance of renal puncture examination is mainly as follows: a clear diagnosis, more than one third of patients can have their clinical diagnosis corrected by renal biopsy; guiding treatment, and modifying the clinical treatment scheme of nearly one third of patients through renal biopsy; the prognosis is estimated, and the prognosis of a renal patient can be more accurately evaluated through renal biopsy.

at present adopt the kidney puncture rifle to carry out the live body sampling more, by the handheld kidney puncture rifle of operating personnel, then survey the position through ultrasonic instrument and sample, this kind of mode often has following problem:

Firstly, the requirements on the technology and experience of sampling personnel are high, the accuracy is low, and medical accidents are easily caused;

Secondly, the puncture needle stays for a long time in the kidney lesion, so that the patient is required to hold breath for a long time, the cutting action is slow, and the surface of the kidney is easily scratched to generate large damage;

and (III) the obtained tissue is small in quantity and poor in quality, and the positive rate and the diagnosis accuracy rate are influenced.

Therefore, it is necessary to provide a renal puncture device with good puncture effect, fast speed, accurate sampling and high accuracy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above problems, the inventor has carried out the research of keen interest, designs a kidney puncture device, and the device includes kidney puncture rifle and the locating component who is used for assistance-localization real-time, locating component includes mounting panel, support and guide rail for kidney puncture rifle can carry out accurate, stable puncture under its is supplementary, and kidney puncture rifle launches the subassembly and the needle body that the sample volume is many through quick percussion, can improve puncture speed and diagnosis correct rate, thereby has accomplished the utility model discloses a needle body is quick.

particularly, the utility model aims at providing following aspect:

the utility model provides a kidney puncture device, which comprises a kidney puncture gun 1 and a positioning component 2 which are detachably connected, wherein the positioning component 2 is used for assisting in positioning the position of the kidney puncture gun; wherein the content of the first and second substances,

the renal biopsy gun 1 comprises a shell 11, an ejection assembly arranged in the shell 11 and a needle body arranged at the bottom end of the ejection assembly;

The ejection assembly comprises a sliding part 12, an elastic part 13 and a fixed part 14 which are connected in sequence from bottom to top and are arranged concentrically;

The needle body comprises an inner needle 15 and an outer sleeve 16 which are concentrically arranged, the inner needle 15 is a solid needle, and the top end of the inner needle is of a straight structure;

The positioning assembly 2 comprises a mounting plate 21 and brackets 22 arranged on both sides thereof, and a guide rail 23 is arranged on the brackets 22 so that the mounting plate 21 can move up and down along the guide rail.

wherein the slider 12 comprises a cylindrical slider body 121 and a slider plate 122 disposed on the bottom surface of the slider body,

the sliding body 121 includes an outer wall 123 and an inner core 124 concentrically arranged with a gap therebetween for disposing the elastic member 13.

wherein, the top end of the inner core 124 is provided with two clamping bulges 125 with the same structure,

The clamping protrusion 125 can generate displacement in the horizontal direction under the action of external force, so that clamping fixation and separation fixation are realized.

Wherein, the fixing piece 14 is fixedly connected with the inner wall of the shell 11, is cylindrical and is tightly attached with the inner wall 11 of the shell,

A cavity is formed at the center of the bottom of the fixing member 14 to be connected with the inner core 124 in a matching manner.

Wherein the cavities include a first cavity 141 and a second cavity 142 concentrically arranged from top to bottom, wherein,

the first cavity 141 is cylindrical, and the second cavity 142 is shaped like a circular truncated cone.

Two triggering parts 143 are arranged in the diameter extending direction of the middle layer of the first cavity 141, so that axial extrusion force is applied to the clamping protrusion 125 clamped in the first cavity, the clamping protrusion is separated from the cavity, and triggering is achieved.

Wherein, in the case of the sliding element 12 not compressing the elastic element 13, the top end of the outer sleeve 16 exceeds the top end of the inner needle 15 by a certain distance;

The top end of the outer sleeve 16 is flush with the top end of the inner needle 15 in the case where the slider 12 compresses the elastic member 13 so that the snap projections snap fit.

wherein, a central groove 211 is arranged at the center of the bottom surface of the mounting plate 21,

track grooves 212 are uniformly arranged around the central groove 211, and the number of the track grooves is 4, and the track grooves are arranged in a pairwise symmetrical manner relative to the central groove.

Wherein, a top fastening member 213 is arranged in the track groove 212 to fasten the kidney puncture gun 1;

the tightening member 213 comprises a fixed seat 214 and a rotating rod 215, wherein,

the fixing seat 214 is fixedly connected to the inner wall of the track groove, a through hole is formed in the middle of the fixing seat 214, and the rotating rod 215 is arranged in the through hole in a matching mode.

the bracket 22 has two groups, each group includes a vertical plate 221 and a horizontal plate 222, which are vertically intersected and have an inverted T-shaped structure.

The utility model discloses the beneficial effect who has includes:

(1) The kidney puncture device provided by the utility model has simple structure, convenient operation, easy control of conditions and strong universality;

(2) The kidney puncture device provided by the utility model has high puncture accuracy, and avoids the injury of the operator caused by insufficient experience or shaking and other factors to the patient;

(3) The kidney puncture device provided by the utility model can flexibly adjust the puncture position and distance according to the needs, and has wide application range;

(4) The kidney puncture device provided by the utility model has fast puncture speed, and can effectively relieve the pain of patients;

(5) the utility model provides a kidney puncture device, the quality and the quantity of biopsy sample are high, can improve diagnostic correct rate.

Drawings

Fig. 1 is a schematic view showing the overall structure of a kidney puncture device according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a preferred embodiment of the present invention;

fig. 3 is a schematic bottom view of a mounting plate according to a preferred embodiment of the present invention.

The reference numbers illustrate:

1-a kidney puncture gun;

11-a housing;

111-a chute;

12-a slide;

121-a sliding body;

122-a sliding plate;

123-outer wall;

124-inner core;

125-clamping protrusion;

13-an elastic member;

14-a fixing member;

141-a first cavity;

142-a second cavity;

143-a trigger;

15-inner needle;

16-outer sleeve;

2-a positioning assembly;

21-mounting a plate;

211-central recess;

212-track groove;

213-a top retaining member;

214-a fixed seat;

215-rotating the rod;

216-a press part;

22-a scaffold;

221-vertical plates;

222-a horizontal plate;

23-a guide rail;

24-a guide groove;

25-fixing the belt;

26-positioning ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. The features and advantages of the present invention will become more apparent from the description. In which, although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

the utility model provides a kidney puncture device, as shown in figure 1, kidney puncture device includes kidney puncture rifle 1 and locating component 2, and wherein, kidney puncture rifle 1 detachable fixes on locating component 2 to the position of assistance-localization real-time kidney puncture rifle.

According to a preferred embodiment of the present invention, as shown in fig. 2, the kidney puncture gun 1 includes a housing 11, an ejection assembly disposed inside the housing 11, and a needle body disposed at the bottom end of the ejection assembly.

in a further preferred embodiment, the housing 11 is cylindrical, and two sliding grooves 111 with the same structure are formed in the lower portion of the outer wall of the housing, so that the ejection assembly can move vertically.

in a further preferred embodiment, the two sliding grooves 111 are symmetrically distributed with respect to the central axis of the housing 11.

according to a preferred embodiment of the present invention, the ejection assembly comprises a sliding member 12, an elastic member 13 and a fixing member 14, which are connected in sequence from bottom to top, and the three are concentrically arranged.

Wherein, the one end that the subassembly of launching is connected with the needle body is the below, and the other end is the top.

In a further preferred embodiment, the slider 12 comprises a cylindrical slider body 121 and a slider plate 122 provided on the bottom surface of the slider body,

the sliding body 121 includes an outer wall 123 and an inner core 124 concentrically arranged with a gap therebetween for disposing an elastic member.

preferably, the outer diameter of the outer wall 123 is smaller than the inner diameter of the housing 11 so that the slider can slide up and down inside the housing.

in a further preferred embodiment, two snap-in projections 125 of the same configuration are provided at the top end of the inner core 124, which are symmetrically arranged with respect to the central axis of the housing.

wherein, the top end of the inner core 124 is the end far away from the bottom surface of the sliding main body.

The utility model discloses in, the protruding 125 of joint can produce the displacement of horizontal direction under the effect of external force to it is fixed and break away from fixedly to realize the joint.

preferably, a through hole is further formed at the center of the sliding body 121 for disposing a needle.

According to a preferred embodiment of the present invention, the sliding plate 122 extends along the diameter of the bottom surface of the sliding body to both sides and is protruded from two sliding grooves 111 outside the housing 11.

Before ejection, external force is required to be applied to pull the sliding piece to compress the elastic piece for 'loading', and the part of the sliding plate extending out of the sliding chute can be used as an external force application point to play a role of a 'loading wrench'; and meanwhile, the vertical movement in a certain range can be carried out along the sliding groove outside the shell.

according to a preferred embodiment of the present invention, one end of the elastic member 13 is connected to the bottom surface of the gap between the outer wall 123 and the inner core 124, and the other end is connected to the bottom surface of the fixing member 14.

In a further preferred embodiment, said elastic element 13 is a spring, which is fitted in an annular gap provided in the outer wall 123 and the inner core 124, so that the elastic element can be kept concentric with the housing during compression and springing open.

Wherein, the outer wall 123 plays the role of axial limit to the elastic element 13.

according to the present invention, the fixing member 14 is fixedly connected to the inner wall of the housing 11, and is cylindrical, and is tightly attached to the inner wall of the housing 11.

In a further preferred embodiment, a cavity is formed in the bottom center of the fixing member 14 to be connected with the top of the inner core 124.

In a further preferred embodiment, the cavities comprise a first 141 and a second 142 cavity concentrically arranged from top to bottom, wherein,

the first cavity 141 is cylindrical, and the second cavity 142 is shaped like a circular truncated cone.

preferably, the diameter of the cavity circular surface at the connecting end of the second cavity 142 and the first cavity 141 is smaller than the diameter of the cavity circular surface at the other end of the second cavity 142;

The diameter of the circular surface of the connecting end of the first cavity 141 and the second cavity 142 is smaller than the diameter of the circular surface of the other end of the first cavity 141.

more preferably, the diameter of the cavity circular surface at the connecting end of the second cavity 142 and the first cavity 141 is smaller than the axial distance between the two clamping protrusions 125;

The diameter of the cavity round surface at the other end of the second cavity 142 is larger than the axial distance between the two clamping protrusions 125.

The structure formed by connecting the first cavity and the second cavity can enable the two clamping protrusions 125 at the top end of the inner core to gradually slide upwards along the inner wall of the second cavity under the action of external force until the inner core slides into the first cavity 141 to be clamped and fixed.

According to the present invention, two triggering members 143 are disposed in the diameter extending direction of the middle layer of the first cavity 141, so as to apply axial extrusion force to the clamping protrusion 125 of the clamping joint in the first cavity, so that the clamping joint is separated from the cavity, thereby triggering the clamping joint.

the middle layer of the first cavity is a circular surface parallel to the upper surface and the lower surface of the first cavity, and the circle center of the circular surface is the center of the first cavity.

in a further preferred embodiment, the trigger 143 includes a trigger lever contacting the snap projection and a trigger button disposed outside the housing 11 through the trigger lever.

the trigger 143 has a resilient structure, and can return to an initial state after the clamping protrusion is separated by applying an extrusion force.

the utility model discloses in, do not specially limit to the resilience structure of trigger piece, it can be for can realizing the common structure of this function among the prior art, if: the structure that rebounds is connected through the clamping piece and the spring.

According to a preferred embodiment of the present invention, a needle body is connected to the central position of the bottom end of the ejection assembly, and the needle body includes an inner needle 15 and an outer cannula 16 which are concentrically arranged.

In a further preferred embodiment, the root of the inner needle 15 is connected to the center of the top surface of the cavity of the fixing member 14, and the tip of the inner needle 15 is protruded from the center of the bottom surface of the housing 11.

wherein, the inner needle does not generate relative displacement with the shell in the working process.

in a further preferred embodiment, the root of the outer sleeve 16 is connected to the center of the bottom surface of the sliding body 121, and the top end of the outer sleeve 16 passes through the center of the bottom surface of the housing 11.

according to a preferred embodiment of the present invention, the inner needle 15 is a solid needle, and the top end thereof is a straight structure;

the top end of the outer sleeve 16 is of a slant tip structure.

In a further preferred embodiment, in the case where the sliding element 12 does not compress the elastic element 13, the top end of the outer sleeve 16 extends beyond the top end of the inner needle 15 by a certain distance, preferably 1.5-4 cm, such as 2.5-3 cm;

the top end of the outer sleeve 16 is flush with the top end of the inner needle 15 in the case where the slider 12 compresses the elastic member 13 so that the snap projections snap fit.

the utility model discloses in, the preferred sampling mode that adopts the percussion outer tube, promptly: in the process of using the puncture gun, the sliding part compresses the elastic part (namely, loading) to enable the top end of the outer sleeve to be flush with the top end of the inner needle; after the puncture enters the surface of the kidney, the part to be sampled is found, and the elastic piece is triggered to enable the outer sleeve to be rapidly fired into the tissue for sampling; after sampling, the elastic piece is compressed again, so that the inner needle pushes out the tissue in the outer sleeve.

The inventor researches and discovers that the needle body with the structure can improve the sampling quantity and the detection success rate.

in a further preferred embodiment, a scale is provided on the outer cannula 16 to clearly show the depth of penetration into the body.

according to a preferred embodiment of the present invention, as shown in fig. 1, the positioning assembly 2 includes a mounting plate 21 and a bracket 22 disposed at both sides thereof, a guide rail 23 is disposed on the bracket 22, so that the mounting plate 21 can move up and down along the guide rail.

In a further preferred embodiment, as shown in fig. 3, a central recess 211 is provided in the center of the bottom surface of the mounting plate 21,

The periphery of the central groove is uniformly provided with 4 track grooves 212 which are arranged in a pairwise symmetrical manner relative to the central groove.

Preferably, the 4 track grooves perpendicularly intersect with 4 side surfaces of the mounting plate respectively.

In a further preferred embodiment, the depth of the central recess 211 on the mounting plate is greater than the depth of the rail groove 212 to achieve a stable connection to the kidney gun 1.

the utility model discloses in, the degree of depth is the distance of the top surface of recess apart from the mounting panel bottom surface, for example: the depth of the central groove is 3/4 of the thickness of the mounting plate, and the depth of the track groove is 1/2 of the thickness of the mounting plate.

according to a preferred embodiment of the present invention, the central recess 211 is configured to match the exterior of the housing 11 of the renal biopsy gun, preferably cylindrical,

wherein the housing 11 is clearance fitted with the central recess 211.

According to a preferred embodiment of the present invention, an urging member 213 is provided in the track groove 212 to fix the kidney puncture gun 1.

in a further preferred embodiment, said top element 213 comprises a fixed seat 214 and a rotating rod 215, wherein,

the fixing seat 214 is fixedly connected to the inner wall of the track groove, a through hole is formed in the middle of the fixing seat 214, and the rotating rod 215 is arranged in the through hole in a matching mode.

In a further preferred embodiment, the through hole of the fixing base is a threaded through hole, and the rotating rod 215 is an external thread structure, and the two are connected by thread fit.

According to a preferred embodiment of the present invention, a pressing member 216 is connected to an end of the rotating rod 215 near the central groove to contact with the renal biopsy gun during the tightening of the rotating rod.

In a further preferred embodiment, the compression element 216 is made of an elastically deformable material, preferably rubber.

in a further preferred embodiment, a boss is provided at the other end of the rotating lever 215 to facilitate the application of the adjusting force to the rotating lever.

In the utility model, the rotating rod is adjusted to apply axial jacking force to the kidney puncture gun so as to horizontally limit the kidney puncture gun; closely laminate through casting die and kidney puncture rifle to carry out vertical spacing to the kidney puncture rifle.

According to a preferred embodiment of the present invention, the support 22 has two sets, each set includes a vertical plate 221 and a horizontal plate 222, which are vertically crossed and have an inverted "T" shape.

In a further preferred embodiment, the two sets of vertical plates of the bracket 22 are arranged opposite to each other, and a guide rail 23 is arranged on the opposite surface of the vertical plate 221, so that the mounting plate 21 can move up and down along the guide rail.

Wherein, two of the mounting panels are fixedly connected with the guide rail.

In a further preferred embodiment, each vertical plate 221 has two rows of symmetrically arranged vertically arranged guide rails, and the guide rails 23 are electrically connected with an external controller to adjust the vertical height of the mounting plate according to actual needs.

Preferably, a guide groove 24 is formed at a position of a vertical center axis of the vertical plate so that the rotating rod 215 can slide inside thereof.

According to a preferred embodiment of the present invention, a fixing band 25 is connected between the two sets of brackets 22 and between the lower portions of the two sets of vertical plates 221, a positioning ring 26 is provided at the middle position of the fixing band 25,

the securing strap 25 is passed over the waist of the patient to secure the positioning ring 26 in the position to be punctured.

In a further preferred embodiment, the positioning ring 26 is arranged coaxially with the renal puncture gun 1.

The utility model discloses in, through using locating component, can prevent effectively that because sampling personnel experience is not abundant or the accuracy that factors such as hand tremble caused is low, medical malpractice scheduling problem, can reduce patient's misery and reduce the danger coefficient.

According to a preferred embodiment of the present invention, the sampling with the renal puncture device comprises the following steps:

Step 1, fixing the bracket 22 at both sides of a patient, so that the fixing belt 25 spans the waist of the patient, and fixing the positioning ring 26 at the position to be punctured;

step 2, fixedly connecting the renal biopsy gun 1 with the mounting plate 21, and adjusting the sliding part 12 to compress the elastic part 13, so that the top end of the outer sleeve 16 is flush with the top end of the inner needle 15;

step 3, adjusting the guide rail 23 through the controller to enable the mounting plate 21 to drive the needle body of the renal biopsy gun 1 to be inserted into a preset depth from the position to be punctured;

step 4, adjusting the trigger 143, triggering the outer sleeve 16 to puncture and sample, and after sampling, adjusting the guide rail to pull out the needle body of the renal puncture gun;

And step 5, adjusting the sliding part 12 again to compress the elastic part 13, so that the inner needle 15 pushes out the tissue in the outer sleeve 16, and the tissue is placed in an external detection test tube to finish the kidney puncture operation.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate the position or positional relationship based on the operation state of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

the present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.

Claims (10)

1. The kidney puncture device is characterized by comprising a kidney puncture gun (1) and a positioning assembly (2) which are detachably connected, wherein the positioning assembly (2) is used for assisting in positioning the kidney puncture gun; wherein the content of the first and second substances,

the kidney puncture gun (1) comprises a shell (11), an ejection component arranged in the shell (11) and a needle body arranged at the bottom end of the ejection component;

The ejection assembly comprises a sliding part (12), an elastic part (13) and a fixed part (14) which are connected in sequence from bottom to top and are arranged concentrically;

the needle body comprises an inner needle (15) and an outer sleeve (16) which are concentrically arranged, the inner needle (15) is a solid needle, and the top end of the inner needle is of a straight structure;

The positioning assembly (2) comprises a mounting plate (21) and supports (22) arranged on two sides of the mounting plate, and guide rails (23) are arranged on the supports (22) so that the mounting plate (21) can move up and down along the guide rails.

2. The device according to claim 1, wherein the slider (12) comprises a cylindrical slider body (121) and a slider plate (122) arranged on the bottom surface of the slider body,

The sliding body (121) comprises an outer wall (123) and an inner core (124) which are concentrically arranged, and a gap between the outer wall and the inner core is used for arranging the elastic piece (13).

3. Device according to claim 2, characterized in that two snap-in projections (125) of identical construction are provided on the top end of the inner core (124),

The clamping protrusion (125) can generate displacement in the horizontal direction under the action of external force so as to realize clamping fixation and separation fixation.

4. the device according to claim 3, characterized in that the fixing member (14) is fixedly connected with the inner wall of the housing (11), is cylindrical and is tightly attached with the inner wall of the housing (11),

A cavity is arranged at the center of the bottom of the fixing piece (14) to be matched and connected with the inner core (124).

5. the device of claim 4, wherein the cavities comprise a first cavity (141) and a second cavity (142) concentrically arranged from top to bottom,

The first cavity (141) is cylindrical, and the second cavity (142) is in a shape similar to a circular truncated cone.

6. the device according to claim 5, characterized in that two triggering parts (143) are arranged in the diameter extending direction of the middle layer of the first cavity (141) to apply axial pressing force to the clamping protrusion (125) clamped in the first cavity to enable the clamping protrusion to be separated from the cavity, so that triggering is realized.

7. A device according to claim 3, characterized in that the tip of the outer sleeve (16) exceeds the tip of the inner needle (15) by a certain distance in the case of an uncompressed spring (13) of the slider (12);

under the condition that the sliding part (12) compresses the elastic part (13) to enable the clamping protrusion to be clamped and fixed, the top end of the outer sleeve (16) is flush with the top end of the inner needle (15).

8. device according to claim 1, characterized in that a central recess (211) is provided in the centre of the bottom surface of the mounting plate (21),

Track grooves (212) are uniformly formed in the periphery of the central groove (211), and the number of the track grooves is 4, and the track grooves are arranged in a pairwise symmetrical mode relative to the central groove.

9. the device according to claim 8, characterized in that a top fastener (213) is provided in the rail groove (212) to fix the kidney puncture gun (1);

The top member (213) comprises a fixed seat (214) and a rotating rod (215), wherein,

The fixing seat (214) is fixedly connected to the inner wall of the track groove, a through hole is formed in the middle of the fixing seat (214), and the rotating rod (215) is arranged in the through hole in a matched mode.

10. the device according to claim 1, characterized in that said support (22) has two groups, each comprising a vertical plate (221) and a horizontal plate (222), which are perpendicularly crossed and present an inverted "T" configuration.