CN210383941U

CN210383941U - Improved testicle puncture biopsy device

Info

Publication number: CN210383941U
Application number: CN201920794892.5U
Authority: CN
Inventors: 史海跃; 季华
Original assignee: Ningbo Women and Children Hospital
Current assignee: Ningbo Women and Children Hospital
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-24
Anticipated expiration: 2029-05-29

Abstract

The utility model provides an improvement formula testicle puncture biopsy device: the puncture needle comprises a needle cylinder and a puncture needle detachably connected to the needle cylinder, wherein a piston is in sliding fit with the needle cylinder, a piston rod is connected to one side, positioned at the open end of the needle cylinder, of the piston, a radial hole with the opening direction perpendicular to the length direction of the puncture needle is formed in the puncture needle, and a limiting sheet which is annularly distributed along the outer peripheral wall of the puncture needle and extends in the radial direction is arranged on one side, positioned at the radial hole and close to the needle cylinder, of the; when the pjncture needle pierces the testicle, spacing piece is used for spacing the pjncture needle on the testicle, through the limiting displacement of spacing piece, can guarantee at extraction sample in-process that the pjncture needle pierces the length of testicle unchangeably, avoids leading to the pjncture needle to pierce the testicle and excessively deeply and cause unexpected damage because of the pjncture needle slides in the testicle, perhaps leads to the pjncture needle to deviate from in the testicle to reduce the damage of puncture to the testicle, and easy operation, labour saving and time saving.

Description

Improved testicle puncture biopsy device

Technical Field

The utility model relates to the field of medical equipment, what specifically say is an improvement formula testicle puncture biopsy device.

Background

The prevalence rate of infertility in couples of child bearing age in our country is about 10-15%, wherein ejaculation disorder and azoospermia account for about 10% of male factors, and the patients need to define spermatogenesis condition by testicular puncture and follow-up assisted reproductive therapy; at present, in clinical work, the methods for testicular biopsy are usually testicular incision sperm extraction and fine needle aspiration testicular sperm extraction, the sampling success rate of the testicular incision sperm extraction is high, but double operation is needed during operation, the operation time is long, and the complication incidence rate is high; the fine needle aspiration testis semen collection method can be operated by one person, has short operation time and fewer complications, but has lower sampling success rate and needs repeated extraction; the conventional testicle puncture biopsy device is a common syringe, when the testicle puncture is performed, an operator fixes a testicle by one hand and needs to continuously control the syringe by the other hand, and pulls a piston so as to generate continuous negative pressure, thereby achieving the purpose of sucking testicle tissues and extracting the testicle tissues.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the defect of above prior art, provide an improvement formula testicle puncture biopsy device less and easy operation to the testicle damage.

The technical solution of the utility model is to provide an improvement formula testicle puncture biopsy device with following structure: the puncture needle comprises a needle cylinder and a puncture needle detachably connected to the needle cylinder, wherein a piston is in sliding fit with the needle cylinder, a piston rod is connected to one side, positioned at the open end of the needle cylinder, of the piston, a radial hole with the opening direction perpendicular to the length direction of the puncture needle is formed in the puncture needle, and a limiting sheet which is annularly distributed along the outer peripheral wall of the puncture needle and extends in the radial direction is arranged on one side, positioned at the radial hole and close to the needle cylinder, of the puncture; when the puncture needle pierces into the testis, the limiting sheet is used for limiting the puncture needle on the testis.

Preferably, the limiting sheet is made of PVC plastics, and one side of the limiting sheet, which is far away from the needle cylinder, is provided with a concave surface which is concave inwards.

Preferably, the limiting sheet is provided with a connecting hole, and the puncture needle penetrates through and is in interference fit with the connecting hole on the limiting sheet; the puncture needle is sleeved with a sleeve, one end of the sleeve abuts against a pintle at the bottom of the puncture needle, and the other end of the sleeve abuts against the bottom of the limiting piece.

Preferably, one end of the sleeve close to the limiting piece is provided with a limiting bulge which is annularly distributed along the outer peripheral wall of the sleeve and radially extends, and the outer diameter of the limiting bulge is larger than the inner diameter of the connecting hole in the limiting piece.

Preferably, the needle tip of the puncture needle is conically shaped.

Preferably, one end of the piston rod, which is positioned outside the syringe, is connected with a pull ring for inserting fingers.

Preferably, the needle cylinder is provided with an anti-slip structure.

Preferably, the anti-slip structure is a rubber gasket annularly distributed along the peripheral wall of the needle cylinder, and anti-slip threads are arranged on the rubber gasket.

Preferably, the hole wall of the radial hole is provided with an arc inclined plane with a smooth surface, and the arc inclined plane is used for preventing testicles from being damaged due to burrs generated on the hole wall of the radial hole.

After the structure more than adopting, the utility model relates to an improvement formula testicle puncture biopsy device compares with prior art, has following advantage:

1. when the improved testicle puncture biopsy device of the utility model is used for testicle puncture biopsy, the puncture needle is punctured into the part to be sampled, the limiting piece is tightly attached to the surface skin of the scrotum, and then the piston rod is pulled to drive the piston to move, so that negative pressure is generated in the needle cylinder and testicle tissue is extracted; by the limiting effect of the limiting piece, the length of the puncture needle penetrating into the testis is unchanged in the process of extracting a sample, and accidental damage caused by the fact that the puncture needle penetrates into the testis deeply due to the fact that the puncture needle slides in the testis or the puncture needle is separated from the testis and has to be punctured and extracted again is avoided; the utility model discloses can reduce the damage of puncture to the testicle at extraction sample in-process to easy operation, labour saving and time saving.

2. Through set up the concave surface on spacing piece, can increase the area of contact of spacing piece and scrotum epidermis when spacing piece pastes tight scrotum surface, reduce the oppression to the testicle of extraction in-process.

3. Because the surface of the puncture needle is smooth, when force is applied to the puncture needle so that the limiting sheet on the puncture needle is abutted to the scrotum epidermis, the limiting sheet can slide towards the needle cylinder direction due to the large force, so that the puncture needle is penetrated into a testis deeply to cause accidental damage, a sleeve is sleeved on the puncture needle, one end of the sleeve is abutted to a pintle at the bottom of the puncture needle, and the other end of the sleeve is abutted to the bottom of the limiting sheet, so that the displacement of the limiting sheet can be avoided.

4. The end of the sleeve abutting against the limiting sheet is provided with a limiting bulge, so that the limiting sheet can be better supported.

5. The shape of the needle head of the puncture needle is set to be conical, so that the needle head can be easily punctured into the testis, the wound of the needle head on the scrotum skin is reduced, and the pain of a patient is relieved.

6. The device can be operated by one hand of an operator by inserting fingers into the pull ring on the piston rod and pulling the piston rod, so that the other hand is vacated to enable the limiting piece to be tightly attached to the scrotum epidermis, and the operation is simple and convenient.

7. The anti-slip structure on the syringe can prevent the fingers clamped on the syringe from sliding to cause accidents when the piston rod is drawn.

8. Through set up the rubber packing ring of annular distribution and set up anti-skidding line on the rubber packing ring at the cylinder periphery wall, can increase the frictional force between finger and cylinder, avoid appearing sliding.

9. The hole wall of the radial hole is set to be an arc inclined plane with a smooth surface, so that the damage to the testis caused by burrs generated on the hole wall of the radial hole can be prevented.

Drawings

Fig. 1 is a schematic structural view of the improved testicle aspiration biopsy device of the present invention.

Fig. 2 is a schematic view of the cross-sectional structure of the puncture needle of the improved testicle aspiration biopsy device of the present invention.

Fig. 3 is a schematic structural view of a spacing piece of the improved testicle aspiration biopsy device of the present invention.

Fig. 4 is a schematic structural view of another view state of the spacing piece of the improved testicle aspiration biopsy device of the present invention.

As shown in the figure:

1. the needle cylinder comprises a needle cylinder body 2, a puncture needle 3, a piston 4, a piston rod 5, a radial hole 6, a limiting sheet 7, a concave surface 8, a connecting hole 9, a sleeve 10, a pintle 11, a limiting bulge 12, a needle head 13, a pull ring 14, an anti-skidding structure 15, a rubber gasket 16, anti-skidding lines 17 and an arc-shaped inclined plane.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1, 2, 3 and 4;

the utility model discloses an improvement formula testicle puncture biopsy device: the puncture needle comprises a needle cylinder 1 and a puncture needle 2 detachably connected to the needle cylinder 1, wherein the puncture needle 2 is of a hollow structure, one end of the puncture needle 2 is connected with a needle head 12, the other end of the puncture needle 2 is connected with a pintle 10, a piston 3 is matched in the needle cylinder 1 in a sliding way, and one side of the piston 3, which is positioned at the open end of the needle cylinder 1, is connected with a piston rod 4; a radial hole 5 with an opening direction perpendicular to the length direction of the puncture needle 2 is formed in the position, close to the needle head 12, of the puncture needle 2, the radial hole 5 is communicated with a hollow structure of the puncture needle 2, the radial hole 5 is a circular hole with the diameter of 0.3cm, a limiting piece 6 which is annularly distributed along the outer peripheral wall of the puncture needle 2 and extends in the radial direction is arranged on one side, close to the needle cylinder 1, of the puncture needle 2, the distance between the limiting piece 6 and the needle head 12 is 1-1.5cm, the limiting piece 6 is made of transparent PVC plastic, a concave surface 7 which is concave inwards is arranged on one side, away from the needle cylinder 1, of the limiting piece 6, a connecting hole 8 is formed in the limiting piece 6, and the puncture needle 2 penetrates through and is in interference fit with the connecting hole 8; a sleeve 9 is sleeved on the puncture needle 2, one end of the sleeve 9 abuts against the bottom of the puncture needle 2, the other end of the sleeve 9 abuts against the bottom of the limiting sheet 6, a limiting bulge 11 which is annularly distributed along the outer peripheral wall of the sleeve 9 and radially extends is arranged at one end, close to the limiting sheet 6, of the sleeve 9, and the outer diameter of the limiting bulge 11 is larger than the inner diameter of a connecting hole 8 in the limiting sheet 6; one end of the piston rod 4, which is positioned outside the syringe 1, is connected with a pull ring 13 with the inner diameter of 1.5-2cm, the pull ring 13 is used for fingers to insert and pull the piston rod 4, and the syringe 1 is provided with an anti-skid structure 14; the anti-slip structure 14 can be a rubber gasket 15 which is annularly distributed along the peripheral wall of the needle cylinder 1, the rubber gasket 15 is provided with anti-slip lines 16 with a net structure, and the rubber gasket 15 which is annularly distributed is arranged on the peripheral wall of the needle cylinder 1, and the anti-slip lines 16 are arranged on the rubber gasket 15, so that the friction force between fingers and the needle cylinder 1 can be increased, and the occurrence of slip is avoided; the anti-skid structure 14 can also be a frosted structure arranged on the outer peripheral wall of the needle cylinder 1, so that the held part of the needle cylinder 1 can be roughened, and the friction force between the fingers and the held part of the needle cylinder 1 is increased; the needle head 12 of the puncture needle 2 is arranged in a conical shape, so that the needle head 12 can be easily punctured into a testis, meanwhile, the wound of the needle head 12 on the scrotum skin is reduced, and the pain of a patient is relieved; the hole wall of the radial hole 5 is provided with an arc inclined plane 17 with a smooth surface, the hole wall of the radial hole 5 is set to be the arc inclined plane 17 with the smooth surface, and therefore damage to the testis due to burrs generated on the hole wall of the radial hole 5 can be prevented.

During assembly, the sleeve 9 is firstly sleeved on the puncture needle 2, the sleeve 9 is slid to enable the bottom of the sleeve 9 to be abutted against the pintle 10 at the bottom of the puncture needle 2, then the puncture needle 2 is aligned to penetrate through the connecting hole 8 on the limiting sheet 6, the limiting sheet 6 is pushed to enable the bottom of the limiting sheet to be abutted against the limiting bulge 11 at the top of the sleeve 9, and then the pintle 10 of the puncture needle 2 is connected to the nipple of the needle cylinder 1.

When an operator performs puncture biopsy, the patient is disinfected and anesthetized conventionally, then the puncture needle 2 is aligned to and punctured into a part needing sampling, and the puncture needle 2 is pushed to the limiting piece 6 on the puncture needle 2 to be attached to the scrotum outer surface skin; an operator holds the puncture needle 2 stably with one hand, keeps the needle head 12 in a fixed state, and the thumb of the other hand penetrates through the pull ring 13 and is clamped on the rubber gasket 15 of the needle cylinder 1 by the rest fingers, the thumb pulls the pull ring 13 outwards and drives the piston 3 to move, so that negative pressure is generated in the needle cylinder 1 and sample tissues are extracted, and the pull ring 13 is repeatedly pulled to the needle cylinder 1 to extract enough sample tissues; finally, when the needle head 12 is withdrawn, the pull ring 13 is pulled to keep the interior of the needle cylinder 1 in a negative pressure state and the puncture needle 2 is slowly withdrawn from the testis, and then the hemostasis treatment is carried out on the puncture point.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. The utility model provides an improvement formula testicle aspiration biopsy device, it includes cylinder (1) and detachable connection pjncture needle (2) on cylinder (1), a sliding fit piston (3) in cylinder (1), piston (3) are located one side that cylinder (1) opened the end and are connected with piston rod (4), its characterized in that: a radial hole (5) with the opening direction perpendicular to the length direction of the puncture needle (2) is formed in the puncture needle (2), and a limiting sheet (6) which is annularly distributed along the outer peripheral wall of the puncture needle (2) and extends in the radial direction is arranged on one side, close to the needle cylinder (1), of the puncture needle (2) and located in the radial hole (5); when the puncture needle (2) pierces into the testis, the limiting sheet (6) is used for limiting the puncture needle (2) on the testis.

2. The improved testicular biopsy apparatus of claim 1, wherein: the limiting piece (6) is made of PVC plastic, and one side, away from the needle cylinder (1), of the limiting piece (6) is provided with a concave surface (7) which is inwards concave.

3. An improved testicular biopsy device according to claim 2 wherein: a connecting hole (8) is formed in the limiting sheet (6), and the puncture needle (2) penetrates through and is in interference fit with the connecting hole (8) in the limiting sheet (6); the puncture needle is characterized in that a sleeve (9) is sleeved on the puncture needle (2), one end of the sleeve (9) abuts against a pintle (10) at the bottom of the puncture needle (2), and the other end of the sleeve abuts against the bottom of the limiting piece (6).

4. An improved testicular biopsy device according to claim 3 wherein: one end of the sleeve (9) close to the limiting piece (6) is provided with a limiting bulge (11) which is distributed annularly along the outer peripheral wall of the sleeve (9) and extends radially, and the outer diameter of the limiting bulge (11) is larger than the inner diameter of the connecting hole (8) on the limiting piece (6).

5. The improved testicular biopsy apparatus of claim 1, wherein: the shape of the needle head (12) of the puncture needle (2) is conical.

6. The improved testicular biopsy apparatus of claim 1, wherein: one end of the piston rod (4) positioned outside the syringe (1) is connected with a pull ring (13) for inserting fingers.

7. The improved testicular biopsy apparatus of claim 1, wherein: the needle cylinder (1) is provided with an anti-skid structure (14).

8. The improved testicular biopsy apparatus of claim 7, wherein: the anti-skid structure (14) is a rubber gasket (15) which is annularly distributed along the peripheral wall of the needle cylinder (1), and anti-skid grains (16) are arranged on the rubber gasket (15).

9. The improved testicular biopsy apparatus of claim 1, wherein: the pore wall department of radial hole (5) is equipped with surperficial smooth arc inclined plane (17), arc inclined plane (17) are used for preventing radial hole (5) pore wall from producing the burr and causing the testicle damage.