CN211511883U

CN211511883U - Bladder puncture biopsy forceps

Info

Publication number: CN211511883U
Application number: CN201921477038.2U
Authority: CN
Inventors: 陈卫国; 张君俊; 浦金贤
Original assignee: First Affiliated Hospital of Suzhou University
Current assignee: First Affiliated Hospital of Suzhou University
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-09-18
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a bladder puncture biopsy forceps, which comprises a puncture needle, a forceps tube, a forceps core, a forceps tube protective sleeve, a connecting seat, a fixed handle and a movable handle, wherein the fixed handle is rotationally connected with the movable handle; the tail end of the puncture needle is provided with a tissue cutting area, one end of the forceps core is connected with the puncture needle, the other end of the forceps core sequentially penetrates through the forceps tube, the connecting sleeve, the first connecting seat and the second connecting seat and extends out of the outer end face of the second connecting seat, a graduated scale with a thread structure is arranged on the forceps core extending out of the second connecting seat, and the forceps core is fixed at the end of the graduated scale through a nut. The biopsy forceps can be better matched with a cystoscope for use, and the needle insertion depth of the puncture needle can be effectively controlled, so that the biopsy forceps have a better effect on obtaining tissues.

Description

Bladder puncture biopsy forceps

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to bladder aspiration biopsy forceps.

Background

At present, the conventional bladder biopsy forceps generally adopt flexible biopsy forceps, and the diameter of a forceps head is as follows: 1.8mm, working length: 48cm, maximum opening: 7 mm. The biopsy forceps can only clamp bladder mucosa and lesion tissues thereof, and when the biopsy forceps are used for biopsy of lesions (such as interstitial bladder) under the mucosa and in the superficial muscle layer, the lesions are easy to slip, and the biopsy forceps are extremely difficult to clamp meaningful tissues, so that the biopsy fails. In addition, the wound surface of the bladder biopsy forceps is large when the forceps jaws acquire bladder mucosa tissues, so that the normal bladder mucosa tissues are easy to tear off, bleed and the like. Under general anesthesia, the bladder mucosa electrostomy can be performed by using an electroscope, so that clear-layered tissues including mucosa, mucosa inherent layer and muscle layer can be cut, and the instrument is a common tool for biopsy of bladder deep tissue at present. However, in order to avoid burning of the tissue during the electrotomy, a large range of bladder tissue needs to be cut, scar formation is easily caused, bladder contracture is caused, the bladder capacity is reduced, the compliance is reduced, and acute complications such as bladder perforation and the like occur; the sheath of the resectoscope is thicker than that of a cystoscope, the incidence rate of urethral injury caused by passing through the urethra is obviously increased, and the success rate of examination is relatively low; the electrotomy needs to be performed under general anesthesia after hospitalization, more medical equipment is used, and the medical expenditure of biopsy and the economic burden of a patient are greatly increased. Therefore, use of an resectoscope for bladder biopsy is rarely clinically applied. Therefore, for diseases with submucosal lesions such as Interstitial Cystitis (IC), an apparatus is clinically manufactured to obtain the diseased tissues under the urinary bladder mucosa and tissues with distinct layers including the structures of the urinary bladder mucosa, the lamina propria and the muscular layer, which is beneficial to more reliable and comprehensive pathological diagnosis and provides accurate biopsy tissues for the research of disease pathogenesis.

Currently, prostate puncture biopsy under ultrasonic positioning is an important means for accurate diagnosis of prostate cancer. The procedure is transrectal or transperineal prostate needle biopsy under ultrasound guidance. The side surface of the puncture needle is provided with a groove, and the metal sleeve outside the puncture needle has the tissue cutting effect in the process of puncturing the prostate, so that the prostate tissue is cut off and kept in the groove. Has the advantages of continuous and clear hierarchical structure, and the main complications are bleeding, infection, pain, dysuria and the like. The total effect of the prostate tissue puncture biopsy is safe and reliable, and a theoretical basis is provided for further research on bladder tissue puncture needle biopsy.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model aims to provide a bladder aspiration biopsy forceps.

In order to achieve the above object, the present invention provides the following technical solutions:

a bladder puncture biopsy forceps comprises a puncture needle, a forceps tube, a forceps core, a forceps tube protecting sleeve, a connecting seat, a fixed handle and a movable handle, wherein the fixed handle and the movable handle are rotatably connected through a screw; the tail end of the puncture needle is provided with a tissue cutting area, one end of the forceps core is connected with the puncture needle, the other end of the forceps core sequentially penetrates through the forceps tube, the connecting sleeve, the first connecting seat and the second connecting seat and extends out of the outer end face of the second connecting seat, a graduated scale is arranged on the forceps core extending out of the second connecting seat and is of a threaded structure, a nut is sleeved at one end, close to the second connecting seat, of the graduated scale, and the forceps core is fixed through the nut.

Furthermore, the tissue cutting area is a groove arranged close to the outer edge of the puncture needle, the end face of the groove close to one side of the tail end of the puncture needle is an inclined plane which forms an obtuse angle with the bottom surface of the horizontal plane, the inclined plane is arranged opposite to the inclined plane of the puncture needle, the end opposite to the inclined plane is a vertical plane perpendicular to the horizontal plane, the width of two sidelines at the bottom of the groove is 2mm, and the distance between the vertical plane and the farthest end of the puncture needle is 3-7 mm.

Further, the scale is of a threaded structure, the scale when the handle is in a closed state is 0mm, and the scale when the handle is in a maximum open state is 7 mm.

Furthermore, the forceps tube is made of metal, and both the forceps tube and the forceps core have soft characteristics.

Has the advantages that: the utility model provides a bladder aspiration biopsy forceps, it has following advantage:

1. compared with a prostate puncture biopsy gun, the biopsy forceps are made of soft metal materials and can be well matched with a cystoscope for use;

2. compared with the traditional bladder biopsy forceps, the bladder puncture biopsy forceps can reach deeper tissue depth, so that the sub-full-layer bladder wall tissues of the bladder mucosa, the lamina propria and the muscular layer can be obtained;

3. the arrangement of the graduated scale can lead the operator to have better grasp on the depth of the needle insertion. Therefore, the bladder aspiration biopsy forceps of the utility model has better effect on the acquisition of tissues.

Drawings

Fig. 1 is a schematic structural view of the biopsy forceps for bladder aspiration of the present invention.

In the figure: 1. puncturing needle; 2. clamping a pipe; 3. a clamp core; 4. a clamp tube protective sleeve; 5. connecting sleeves; 6. fixing a handle; 7. a movable handle; 8. a first connecting seat; 9. a second connecting seat; 10. a tissue cutting zone; 11. a graduated scale; 12. and a nut.

Detailed Description

The present invention is further described below with reference to specific examples, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

A bladder puncture biopsy forceps is shown in figure 1 and comprises a puncture needle 1, a forceps tube 2, a forceps core 3, a forceps tube protective sleeve 4, a connecting sleeve 5, a connecting seat, a fixed handle 6 and a movable handle 7, wherein the fixed handle 6 and the movable handle 7 are rotatably connected through screws, the connecting seat comprises a first connecting seat 8 fixed on the fixed handle 6 and a second connecting seat 9 fixed on the movable handle 7, the connecting sleeve 5 is fixed on the first connecting seat 8, the forceps tube 2 is fixed on the connecting sleeve 5, and the forceps tube protective sleeve 4 is sleeved at one end, close to the connecting sleeve 5, of the periphery of the forceps tube 2; the utility model discloses a pincers, including pjncture needle 1, first connecting seat 9, second connecting seat 9, scale 11, the end cover that is close to second connecting seat 9 on the scale 11 has nut 12, and nut 12 can play fixed reading effect, the end of pjncture needle 1 is equipped with tissue cutting district 10, the one end of pincers core 3 is connected with pjncture needle 1, and its other end passes pincers pipe 2, adapter sleeve 5, first connecting seat 8, second connecting seat 9 in proper order and stretches out in the outer terminal surface of second connecting seat 9, stretches out to be equipped with scale 11 on the pincers core of second connecting seat 9, scale 11 is the.

The tissue cutting area 10 is a groove arranged close to the outer edge of the puncture needle, the end face of the groove close to one side of the tail end of the puncture needle is an inclined plane which forms an obtuse angle with the bottom surface of a horizontal plane, the inclined plane is arranged opposite to the inclined plane of the puncture needle, the end opposite to the inclined plane is a vertical plane perpendicular to the horizontal plane, the width of two side lines at the bottom of the groove is 2mm, and the distance between the vertical plane and the farthest end of the puncture needle is 3-7 mm. In the process of the expansion and contraction of the puncture needle, a shearing force is formed between the groove inclined plane close to the tail end of the puncture needle and the outer end face of the lead pipe, so that the tissue is cut.

The scale 11 is of a threaded structure, the scale when the handle is in a closed state is 0mm, and the scale when the handle is in a maximum open state is 7 mm.

The forceps tube is made of metal, and the forceps tube and the forceps core both have soft characteristics, so that the forceps tube can be bent freely in the bladder and urethra of a human body, and tissues can be conveniently obtained.

The use method of the bladder puncture biopsy forceps is as follows:

1. the bladder puncture biopsy forceps need to be matched with a urethrocystoscope of a brand such as HAWK and the like for use.

2. When tissue biopsy is needed after the cystoscope enters the bladder, the handle of the bladder puncture biopsy forceps is held, and the bladder puncture biopsy forceps are placed from the grasping forceps channel of the cystoscope until the puncture needle appears in the field of vision of the cystoscope.

3. 150ml of normal saline is filled into the bladder in advance, the thickness of the bladder wall of a patient is determined by ultrasonic, after the scales behind the handle of the biopsy forceps are fixed at the depth to be punctured, the head end of the puncture needle in the visual field of the cystoscope is observed, the puncture needle is close to the bladder mucosa, the handle is opened by the right hand, the head end puncture needle is punctured into the bladder mucosa until the fixed depth is reached, then the handle is closed, and the puncture needle and the sleeve play a role in cutting tissues in the process. The bioptome is then withdrawn along the grasper channel.

4. The controller device is unlocked, the handle is opened, the puncture needle is pushed out from the forceps tube, and the bladder biopsy tissue can be obtained in the groove of the puncture needle.

Claims

1. A bladder puncture biopsy forceps comprises a puncture needle, a forceps tube, a forceps core, a forceps tube protective sleeve, a connecting seat, a fixed handle and a movable handle, and is characterized in that the fixed handle and the movable handle are rotatably connected through a screw, the connecting seat comprises a first connecting seat fixed on the fixed handle and a second connecting seat fixed on the movable handle, the connecting sleeve is fixed on the first connecting seat, the forceps tube is fixed on the connecting sleeve, and the forceps tube protective sleeve is sleeved at one end, close to the connecting sleeve, of the periphery of the forceps tube; the tail end of the puncture needle is provided with a tissue cutting area, one end of the forceps core is connected with the puncture needle, the other end of the forceps core sequentially penetrates through the forceps tube, the connecting sleeve, the first connecting seat and the second connecting seat and extends out of the outer end face of the second connecting seat, a graduated scale is arranged on the forceps core extending out of the second connecting seat and is of a threaded structure, a nut is sleeved at one end, close to the second connecting seat, of the graduated scale, and the forceps core is fixed through the nut.

2. The biopsy forceps for bladder puncture according to claim 1, wherein the tissue cutting area is a groove disposed near the outer edge of the puncture needle, the end surface of the groove on the side near the end of the puncture needle is an inclined surface forming an obtuse angle with the bottom surface of the horizontal plane, the inclined surface is disposed opposite to the inclined surface of the puncture needle, the end opposite to the inclined surface is a vertical surface perpendicular to the horizontal plane, the width of two side lines at the bottom of the groove is 2mm, and the distance from the vertical surface to the farthest end of the puncture needle is 3-7 mm.

3. The biopsy forceps of claim 1, wherein the scale is 0mm when the handle is closed and 7mm when the handle is maximally open.

4. The biopsy forceps of claim 1, wherein the forceps tube is made of metal, and the forceps tube and the forceps core are both soft.