CN201431494Y

CN201431494Y - Improved telescopic puncture needle

Info

Publication number: CN201431494Y
Application number: CN2009200611974U
Authority: CN
Inventors: 江千里; 江汕; 肖军; 常威; 何美蓉; 石敏; 孟卫东
Original assignee: Southern Medical University
Current assignee: Southern Medical University
Priority date: 2009-07-24
Filing date: 2009-07-24
Publication date: 2010-03-31
Anticipated expiration: 2019-07-24

Abstract

The utility model discloses an improved telescopic puncture needle, which consists of an inner needle tube (1) and an outer needle tube (2). The outer needle tube (2) is sleeved outside the inner needle tube (1), and the tail parts of the inner needle tube (1) and the outer needle tube (2) are connected with each other through threads to form a spiral telescopic structure. The improved telescopicpuncture needle is characterized in that the end of either of the inner needle tube (1) and the outer needle tube (2) is in a single-sided bevel shape, thereby forming an acute end (6), and the end ofthe other of the inner needle tube (1) and the outer needle tube (2) is in a double-sided bevel shape, and the intersection of the two bevels forms an arc-shaped blunt end (7). The utility model hassignificant effect on the prevention of the tissue block in the body fluid of the patient from blocking the drainage opening.

Description

A kind of extension-type puncture needle of improvement

Technical field

This utility model relates to a kind of surgical instruments, is specifically related to a kind of puncture needle.

Background technology

Often run into thoracic cavity and pneumoperitoneum in clinical or/and the disease of hydrops, this disease at first will be carried out aerofluxus or/and drainage treatment with puncture needle usually.Traditional thoracentesis needle is exactly common No. 16 or No. 12 syringe needles, this syringe needle has the needle point that is the oblique section, in aerofluxus or/and in the process of drain, along with the intravital gas of patient or/and the motion of the minimizing of liquid or patient's internal organs, have slightly very not to be easy to injure patient's internal organs, can jeopardize patient's life when serious.Granted publication number discloses a kind of " bushing type thoracentesis needle " that solves the problems of the technologies described above for the utility model patent of CN226849Y, this puncture needle is characterised in that: " it is assembled by overcoat bobbin, inner sleeve pin, fixing knob, the sebific duct of advancing; overcoat bobbin needle point is sharp-pointed oblique section; inner sleeve pin needle point is cross section; the fixing knob that advances is fixed on the inner sleeve pin, and the afterbody that connects the inside and outside trocar, inner sleeve pin is connected with syringe by sebific duct." by above-mentioned patent scheme as seen; when overcoat bobbin needle point thrusts in patient's body; turn to advance knob (being knob) to make to have the overcoat bobbin needle point that is the oblique section needle point and be retracted into after the inner sleeve needle end part, can avoid being the internal organs that the oblique section needle point injures the patient effectively.But the inner sleeve pin needle point of above-mentioned patent scheme is cross section, and the sectional area of its draining hole only is the internal diameter of inner sleeve pin, when patient's body fluid contains piece of tissue (as clot), draining hole is stopped up and cause drainage treatment to proceed with regard to being easy to.

Summary of the invention

In view of there is above-mentioned deficiency in prior art, technical problem to be solved in the utility model is to avoid the piece of tissue that contained in patient's body fluid to stop up the draining hole of needle tubing, guarantees carrying out smoothly of drainage treatment.

The technical scheme that this utility model addresses the above problem is:

A kind of extension-type puncture needle of improvement, this puncture needle is made up of inner needle tube and outer needle tubing, described outer needle tubing is placed in outside the inner needle tube, the afterbody of the two forms the spiral stretching structure by being threaded togather, the end that it is characterized in that inner needle tube and outer needle tubing, one monolateral bevels form sharp end, the bilateral bevel of another person, and the intersection of two oblique sections is arcual blunt end.

In the such scheme, the embodiment of a first-selection is that the monolateral bevel in the end of outer needle tubing forms sharp end, the bilateral bevel in the end of inner needle tube, and the intersection of two oblique sections is arcual blunt end.The structure of this first-selected embodiment is more conducive to puncture procedure, because thrust the back as long as outer tube is return a bit, inner needle tube is more goed deep in patient's the body than outer needle tubing, does not worry that definitely this operation can injure patient's internal organs.In addition because the diameter of outer needle tubing is greater than inner needle tube, therefore after outer needle tubing thrusts human body when the enforcement drainage procedure, need not to carry out the secondary puncture of drainage tube (inner needle tube of present embodiment), can significantly alleviate patient's misery.

Puncture needle described in the utility model, wherein, described needle tubing with sharp end is used to puncture patient's human body and guides whole puncture needle to enter in the body, described needle tubing drain with blunt end.Because described blunt end has bilateral oblique section, therefore can predict, when piece of tissue in patient's body fluid arrives draining hole, just the arc blunt end that is protracted withstands, body fluid is able to enter drainage tube from two oblique sections, make drainage treatment still can proceed, the effect of avoiding draining hole to stop up is very remarkable.

Description of drawings

Fig. 1 and Fig. 2 are the structural representation of a specific embodiment of the present utility model, and wherein, Fig. 1 is a front view, and Fig. 2 is a vertical view.

Fig. 3 and Fig. 4 are the inner needle tube of another specific embodiment of the present utility model and the end construction sketch map of outer needle tubing, and wherein, Fig. 1 is a front view, and Fig. 2 is a vertical view.

The state diagram of inner needle tube and outer needle tubing when Fig. 5 is in the drain state for embodiment illustrated in figures 1 and 2, the arrow among the figure is represented the flow direction of body fluid.

Fig. 6 is Fig. 3 and the state diagram of inner needle tube and outer needle tubing when being in the drain state embodiment illustrated in fig. 4,

Arrow among the figure is represented the flow direction of body fluid.

The specific embodiment

Referring to Fig. 1 and Fig. 2, inner needle tube 1 and outer needle tubing 2 are all selected the medical stainless steel manufacturing for use, and wherein, the monolateral bevel of the left end of outer needle tubing 2 forms sharp end 6 (being needle point), and the right body of portion end to end stretches out to thicken and forms a lever 3; Outer needle tubing 2 is provided with female thread on the inwall that is positioned at 3 one sections of levers, two of female thread is respectively equipped with a cannelure, is respectively equipped with sealing ring 4 in each groove, and the inner edge of sealing ring 4 wraps the outer wall of inner needle tube 1; The bilateral bevel of the left end of inner needle tube 1, the intersection of two oblique sections is arcual blunt end 7, body extends to the right and passes through outer needle tubing 2, the position that cooperates with outer needle tubing 2 be provided with outside set female thread is complementary on the needle tubing 2 external screw thread, part outside stretching out the end of described lever 3 is provided with zigzag outer cone hose coupling 5, so that connect drainage bag fast.

Referring to Fig. 1 and Fig. 2, use this routine described puncture needle as described below: the lever 3 of holding with a firm grip to the proper operation method that the patient implements drainage treatment, puncture the top layer of human body with the sharp end 6 of outer needle tubing 2, the application of force mouth of pipe (being draining hole) that makes inner needle tube 1 have the diclinic cross section enters patient's pneumatosis fully or/and in the body of hydrops again, the fixing inner needle tube 1 of hands then, the another hands turns the lever 3 of outer needle tubing 2, can begin drain after making the sharp end 6 of outer needle tubing 2 retreat to the blunt end 7 of inner needle tube 1.Referring to Fig. 5, in the process of drain, when piece of tissue in patient's body fluid 8 arrived draining hole, just the arc blunt end 7 that is protracted by inner needle tube 1 withstood, and body fluid is able to enter drainage tube from two oblique sections, and drainage treatment still can be proceeded.

Referring to Fig. 3 and Fig. 4, this example is with the difference of enforcement illustrated in figures 1 and 2, the left end of inner needle tube 1 is designed to monolateral bevel forms sharp end 6 (being needle point), the left end of outer needle tubing 2 is designed to the form of bilateral bevel, and the intersection of two oblique sections is designed to arcual blunt end 7.During puncture, puncture the top layer of human body with the sharp end 6 of inner needle tube 1, the application of force makes outer needle tubing 2 have the mouth of pipe in diclinic cross section (being draining hole) and enters patient's pneumatosis fully or/and in the body of hydrops again, a hand-tight lever 3 is fixed outer needle tubing 2 then, the another hands turns the overhanging afterbody of inner needle tube 2, can begin drain after making the sharp end 6 of inner needle tube 1 retreat to the blunt end 7 of outer needle tubing 2.Referring to Fig. 6, in the process of drain, when piece of tissue in patient's body fluid 8 arrived draining hole, just the arc blunt end 7 that is protracted by inner needle tube 2 withstood, and body fluid is able to enter drainage tube from two oblique sections, and drainage treatment still can be proceeded.

The operational approach of above-mentioned enforcement puncture drainage is not unique, and possibility neither be best.Because inner needle tube 1 is relative with the displacement of outer needle tubing 2, during concrete operations, make another produce the task that relative displacement all can be finished puncture drainage equally as long as fix any, just may exist a kind of method to make puncture become more smooth, and can alleviate patient suffering's operational approach, the medical worker can grope.

Claims

1, a kind of extension-type puncture needle of improvement, this puncture needle is made up of inner needle tube (1) and outer needle tubing (2), described outer needle tubing (2) is placed in outside the inner needle tube (1), the afterbody of the two forms the spiral stretching structure by being threaded togather, it is characterized in that, the end of inner needle tube (1) and outer needle tubing (2), one form sharp end (6) for monolateral bevel, the bilateral bevel of another person, the intersection of two oblique sections is arcual blunt end (7).

2, the extension-type puncture needle of a kind of improvement according to claim 1, it is characterized in that, the monolateral bevel in end of described outer needle tubing (2) forms sharp end (6), the bilateral bevel in end of described inner needle tube (1), and the intersection of two oblique sections is arcual blunt end (7).

3, the extension-type puncture needle of a kind of improvement according to claim 1 and 2, it is characterized in that, two of set female thread is respectively equipped with a cannelure on the inwall of described outer needle tubing (2), and each groove is built-in with sealing ring (4), and the inner edge of sealing ring (4) wraps the outer wall of inner needle tube (1).

4, the extension-type puncture needle of a kind of improvement according to claim 1 and 2 is characterized in that, the part outside described inner needle tube (1) needle tubing (2) outside stretching out is terminal is provided with zigzag outer cone hose coupling (5).