CN201135459Y

CN201135459Y - Pubovesical muscle biopsy puncture needle

Info

Publication number: CN201135459Y
Application number: CNU2007201851336U
Authority: CN
Inventors: 杨进益
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-21
Filing date: 2007-12-21
Publication date: 2008-10-22
Anticipated expiration: 2017-12-21

Abstract

The utility model provides a puncture needle which can be effectively used for detrusor biopsy sampling. The puncture needle used for the detrusor biopsy sampling comprises a needle core, an outer cannula, and a sampling tank at the front end of the needle core, wherein the tail ends of the needle core and the outer cannula are obliquely cut into needle tip, the needle core is nested in the outer cannula, the included angle between the tangent plane near to the needle tip of the sampling tank and the bottom surface of the sampling tank is an acute angle, and a barb-shaped hook is formed at the end near to the needle tip of the sampling tank. Aiming at the physiological characteristics of the muscle tissue, the puncture needle used for the detrusor biopsy sampling can effectively acquire the specimen of the detrusor through puncture under the guide of color Dopplar ultrasound, and thereby the disadvantage of the traditional material taking method is avoided; the rapid and effective sampling of the detrusor is realized, the injury is small, the expense is low, and the pain of the patient is slight; in addition, the puncture needle used for the detrusor biopsy sampling has the advantages of simple structure, low cost, and easy production, popularization and application.

Description

The detrusor biopsy needle

Technical field

This utility model relates to the puncture needle of biopsy sampling, relates in particular to the puncture needle that is used for detrusor of bladder biopsy sampling.

Background technology

Biopsy is the important diagnosis and treatment means of clinical guidance treatment and judging prognosis, and sampling quality is to influence the whether accurate key factor of diagnosis and treatment.Traditional, also be that the maximum diagnostic detrusor of bladder biopsy sampling method of present clinical practice mainly contains two kinds of open surgery and cystoscopies, its weak point is that patient's wound is heavy, and is painful big, the expense height.Puncture needle sampling is little because of its wound, expense is cheap, the painful very important clinical application value that significantly a bit has in this field such as slight of patient.Existing puncture needle because of spininess to more softish tissue, such as body of gland, it is directly applied to detrusor of bladder when sampling puncture variety of problems: sample cutting difficulty, slippage etc. from the sampling groove easily.Design a kind ofly can effectively address the above problem, just very necessary at the biopsy puncture sampling probe of muscle.

Summary of the invention

The purpose of this utility model is to provide a kind of puncture needle that is effective to detrusor biopsy sampling.

Detrusor biopsy needle described in the utility model comprises the sampling groove of nook closing member, trocar sheath and nook closing member front end, the end of nook closing member and trocar sheath is all cut sth. askew is needle point, nook closing member is sleeved in the trocar sheath, the nearly needle tip tangent plane and the sampling groove bottom surface angle of described sampling groove are acute angle, and nook closing member forms barb-like hook ridge at the nearly needle tip place of sampling groove.The design of barb-like sampling groove mainly is that muscle is bigger than body of gland hardness during at detrusor puncture sampling, and muscle is easily from the problem of sampling groove slippage when using the sampling groove of existing no barb.When the product after the improvement was used for the detrusor sampling, barb limited the muscle that enters sampling groove, prevents that its slippage from going out groove.

Hook ridge described in the detrusor biopsy needle described in the utility model is relative with the terminal needle point of trocar sheath.Described sampling groove both sides are sharp sword.When these features help taking a sample to the cutting of muscle.And understand easily, line of cut is sharp more, and is easy more to the cutting of muscle, and therefore the sample of obtaining real structure of easy more maintenance and physiological feature help obtaining diagnosis and treatment foundation accurately more.

In addition, although the qualification of size does not influence the scope of utility model, but in order more preferably to realize the purpose of this utility model, this description is still carried out some explanations to this: detrusor biopsy needle described in the utility model is to obtain by the structure of aspiration biopsy of prostatic gland pin is improved.Compare with the needle body that is used for body of gland puncture sampling accordingly, the nook closing member of this detrusor biopsy needle, the diameter of trocar sheath all increase to some extent to satisfy the needs of muscle sampling, make the trocar sheath external diameter reach 2～3mm.Corresponding to increasing thick nook closing member, the degree of depth of sampling groove is also deepened to some extent, and the sampling groove both sides form sharp sword, helps treating the cutting of sampling muscle.

Detrusor biopsy needle described in the utility model is at the muscular tissue physiological feature, and puncture can be obtained the detrusor specimen effectively under color ultrasound guidance, has avoided the deficiency of traditional method of drawing material.Realize the sampling fast and effeciently of detrusor, wound is little, expense is cheap, patient is painful slight.In addition, detrusor biopsy needle described in the utility model is simple in structure, with low cost, is easy to produce and apply.

Description of drawings

This utility model accompanying drawing 3 width of cloth, because of inventive point of the present utility model all relates to the needle body front end of puncture needle, so institute's drawings attached all only shows the needle body front segment structure of puncture needle, miscellaneous part is identical with existing puncture needle.

In these accompanying drawings:

Fig. 1 is the structural representation of the detrusor biopsy needle under the sampling groove exposure situation;

Fig. 2 and Fig. 3 are that above-mentioned detrusor biopsy needle sampling groove is hidden the structural representation under the situation;

Wherein, Fig. 3 is the cutaway view of Fig. 2

Among the figure: 1. nook closing member, 2. trocar sheath, 3. sampling groove, 4. hook ridge.

The specific embodiment

The specific embodiment of detrusor biopsy needle described in the utility model is as shown in drawings: a kind of detrusor biopsy needle comprises the sampling groove 3 of nook closing member 1, trocar sheath 2 and nook closing member front end.One end of nook closing member 1 and trocar sheath 2 is separately fixed on two external members of the same handle (accompanying drawing does not show), and nook closing member 1 is sleeved in the trocar sheath 2 and nook closing member 1 can be along endwisely slipping in trocar sheath 2; Two handle external member relative fixed, co-axial nook closing member 1 and trocar sheath 2 nothings relatively rotate; Should on the basis that guarantees nook closing member 1 and trocar sheath 2 relative free slidings, make the internal diameter of the external diameter of nook closing member 1 and trocar sheath 2 approaching as far as possible in the course of processing.The end of nook closing member 1 and trocar sheath 2 is all cut sth. askew is needle point.The nearly needle tip tangent plane of sampling groove 3 and sampling groove 3 bottom surface angles are acute angle, like this, make nook closing member 1 sharp as far as possible at the edge that the nearly needle tip place of sampling groove 3 forms barb-like hook ridge 4 and hook ridge 4.The cut sth. askew needle point place at the tip that forms of described hook ridge 4 and trocar sheath 2 ends is relative.Sampling groove 3 both sides also are processed as sharp sword.

When using this detrusor biopsy needle to carry out sampling operation: 1. nook closing member 1 is regained trocar sheath 2, sampling groove 3 is hidden in the trocar sheath 2 fully, under color ultrasound guidance, puncture, arrive the target sampling point and the degree of depth; 2. pumpback trocar sheath 2 exposes sampling groove 3 fully, and the muscular tissue of sampling is packed in the groove of sampling groove 3; 3. rotate puncture needle, make the rotational synchronization of nook closing member 1 and trocar sheath 2, the muscle that the sword of sampling groove sharp edges is treated sampling cuts; 4. advance trocar sheath 2, the sampling groove 3 of having filled muscle samples is hidden to trocar sheath 2; 5. extract puncture needle at last, obtain the muscle samples of keeping somewhere in sampling groove 3.

In the tradition sampling operation, when step advanced trocar sheath 2 in 4., the muscular tissue that has entered sampling groove 3 was usually because be subjected to trocar sheath 2 extruding, skidded off sampling groove and caused the sampling failure along the nearly needle point face of sampling groove 3; And puncture needle described in the utility model can limit muscle in this step operation to skid off because the existence of hook ridge 4 is arranged effectively, has solved the problems referred to above.

Claims

1. detrusor biopsy needle, the sampling groove (3) that comprises nook closing member (1), trocar sheath (2) and nook closing member front end, the end of nook closing member (1) and trocar sheath (2) is all cut sth. askew is needle point, nook closing member (1) is sleeved in the trocar sheath (2), the nearly needle tip tangent plane and sampling groove (3) the bottom surface angle that it is characterized in that described sampling groove (3) are acute angle, and nook closing member (1) forms barb-like hook ridge (4) at the nearly needle tip place of sampling groove (3).

2. detrusor biopsy needle according to claim 1 is characterized in that described hook ridge (4) is relative with the terminal needle point of trocar sheath (2).

3. detrusor biopsy needle according to claim 1 is characterized in that described sampling groove (3) both sides are sharp sword.