CN203874190U - Hematodialysis puncture needle assembly - Google Patents
Hematodialysis puncture needle assembly Download PDFInfo
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- CN203874190U CN203874190U CN201420241896.8U CN201420241896U CN203874190U CN 203874190 U CN203874190 U CN 203874190U CN 201420241896 U CN201420241896 U CN 201420241896U CN 203874190 U CN203874190 U CN 203874190U
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- inner sleeve
- trocar sheath
- needle assembly
- puncture needle
- rear end
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Abstract
The utility model relates to a hematodialysis puncture needle assembly in the technical field of medical instruments. The hematodialysis puncture needle assembly comprises a needle head, an inner sleeve and an outer sleeve, wherein the needle head is inserted into the inner sleeve from the front end of the inner sleeve, an annular clamping block is fixedly arranged on the outer peripheral surface of the front end of the inner sleeve, a locating ring is arranged on the outer peripheral surface of the rear end of the inner sleeve, the inner sleeve is sleeved by the outer sleeve, the outer sleeve can axially move relative to the inner sleeve, the central axis of the outer sleeve coincides with the central axis of the inner sleeve, a locating ring is arranged on the inner wall of the front end of the outer sleeve, the outer peripheral surface of the annular clamping block is sleeved by a locating ring, at least two wedge-shaped locking blocks arranged on the same radial section are evenly distributed on the inner wall of the rear end of the outer sleeve, and locating rings are clamped into the wedge-shaped locking blocks. The hematodialysis puncture needle assembly is simple in structure, a medical worker can conveniently process the needle head with one hand, and the medical worker is effectively prevented from being punctured by the needle head or being infected in operation.
Description
Technical field
This utility model relates to medical treatment device technical field, particularly relates to a kind of hemodialysis puncture needle assembly.
Background technology
Hemodialysis is one of patients with renal failure kidney Replacement Therapy.Hemodialysis is by being drained to external by body inner blood, through a dialyser, blood to carry out mass exchange containing the similar electrolyte solution of body concentration by disperse/convection current, remove metabolic waste in body, maintain electrolyte and acid-base balance, remove too much moisture in body simultaneously.When hemodialysis, connect human body and dialyser by hemodialysis puncture needle assembly.
Existing hemodialysis puncture needle assembly comprises syringe needle, the pin wing, syringe, pin cap and hollow infusion tube, the front end of syringe is fixedly connected with syringe needle, on the outer circumference surface of the front end of syringe, be provided with the pin wing, pin cap sleeve is on syringe needle, hollow infusion tube cover is fixed in the rear end of syringe, hollow infusion tube is long is 25cm, and syringe needle, the pin wing, syringe and hollow infusion tube are inseparable.
Medical personnel in blood dialysis room use hemodialysis puncture needle assembly to puncture for internal arteriovenous fistula dialysis patient, after dialysis finishes, and when medical personnel extract syringe needle for patient, need to be when one hand be pressed internal fistula, singlehanded processing syringe needle.Clinical Processing syringe needle is widely used following two kinds of methods: one is that whole hemodialysis puncture needle assembly pin is placed in sharp disposable container, and another kind is that pin cap is fixed on sheet, and syringe needle is inserted in pin cap by one hand.
But medical personnel use existing hemodialysis puncture needle assembly to exist easily by needle sting or infected situation in operation.Be placed in sharp disposable container disposable hemodialysis puncture needle assembly, very difficult, and easily cause needle sting medical personnel; When syringe needle is inserted in pin cap by one hand, the waste liquid in syringe may spill, and causes environmental pollution; Syringe needle also may sting sheet, and because some patient may suffer from infectious disease, when medical personnel clear up environment or sheet, infected risk is very high.
How to design one simple in structure, make medical personnel's singlehanded syringe needle of processing easily, effectively avoiding medical personnel is the problem that those skilled in the art need to solve by needle sting or infected situation in operation.
Utility model content
The shortcoming of prior art in view of the above, it is a kind of simple in structure that the technical problem that this utility model solves is to provide, make medical personnel's singlehanded syringe needle of processing easily, effectively avoid medical personnel by needle sting or infected hemodialysis puncture needle assembly in operation.
For achieving the above object and other relevant objects, this utility model provides a kind of hemodialysis puncture needle assembly, comprising: syringe needle, inner sleeve and trocar sheath; Described inner sleeve is hollow circular tube, and described syringe needle inserts described inner sleeve from the front end of described inner sleeve, and is fixedly connected with described inner sleeve; On the outer circumference surface of the front end of described inner sleeve, be fixedly installed annular fixture block, on the outer circumference surface of the rear end of described inner sleeve, be provided with centring ring; Described trocar sheath is hollow circular tube, and described trocar sheath is sheathed on the outside of described inner sleeve and can moves vertically with respect to described inner sleeve the central axis conllinear of the central axis of described trocar sheath and described inner sleeve; The inwall of the front end of described trocar sheath is provided with locating ring, and described locating ring is enclosed within on the outer circumference surface of described annular fixture block; On the inwall of the rear end of described trocar sheath, be evenly arranged at least two wedge shape clamping blocks in same radial section, described centring ring is stuck between at least two described wedge shape clamping blocks, the radius of the outer circumference surface of described annular fixture block is less than the distance of described wedge shape clamping block front end end to the central axis of described trocar sheath, and is greater than the distance of end, described wedge shape clamping block rear end to the central axis of described trocar sheath; The end, rear end of described wedge shape clamping block is more than or equal to the front end end of described syringe needle to the distance of the front end end of described annular fixture block to the distance of the front end end of described trocar sheath.
Preferably, in the time that described wedge shape clamping block is three, three described wedge shape locking 120 ° of block gaps arrangements.
Preferably, the outer wall of the front end of described trocar sheath is provided with toroidal cavity, and described hemodialysis puncture needle assembly also comprises the pin wing, and described pin wing cover is fixed in described toroidal cavity.
Further, the outer wall of the front end of described trocar sheath is provided with and corresponding four hollow-out parts of the described pin wing, four described hollow-out parts are in same radial section and the arrangement of 90 °, interval, described hollow-out parts extends to the front end end of described trocar sheath vertically, and described hollow-out parts radially extends to the inside of described locating ring from the outer wall of described trocar sheath.
Preferably, the outer circumference surface of the rear end of described inner sleeve is provided with collar stop, and described collar stop contacts with the end, rear end of described trocar sheath, and the size of described collar stop is greater than the size of the end, rear end of described trocar sheath.
Preferably, described hemodialysis puncture needle assembly also comprises pin cap, and described pin cap sleeve is on described syringe needle.
Preferably, described hemodialysis puncture needle assembly also comprises hollow infusion tube, and the front end of described hollow infusion tube is fixedly connected with the rear end of described inner sleeve, and the length of described infusion tube is 10cm.
As mentioned above, hemodialysis puncture needle assembly of the present utility model, has following beneficial effect:
(1) hemodialysis puncture needle assembly of the present utility model, trocar sheath is sheathed on the outside of inner sleeve, and the centring ring of inner sleeve snaps in the wedge shape clamping block of trocar sheath, makes the formation rear end axial location between trocar sheath and inner sleeve, the locating ring of trocar sheath is enclosed within on the outer circumference surface of annular fixture block, makes the formation front end axial location between trocar sheath and inner sleeve, after having dialysed, medical personnel can singlehandedly advance trocar sheath to the front end of syringe needle, centring ring is separated with wedge shape clamping block, locating ring separates with annular fixture block, because the radius of the outer circumference surface of annular fixture block is less than the distance of wedge shape clamping block front end end to the central axis of trocar sheath, and be greater than the distance of end, wedge shape clamping block rear end to the central axis of trocar sheath, the end, rear end of wedge shape clamping block is by behind the front end end of annular fixture block, trocar sheath can cover the syringe needle in inner sleeve outside, and annular fixture block limits the position of trocar sheath, make the end, rear end of wedge shape clamping block cannot pass through the front end end of annular fixture block, be that trocar sheath cannot move to the back-end,
(2) hemodialysis puncture needle assembly of the present utility model, pin wing cover is fixed on the outer wall of trocar sheath, the outer wall of the front end of trocar sheath is provided with and corresponding four hollow-out parts of the pin wing, holding the pin wing makes trocar sheath stressed, four hollow-out parts are inwardly tightened up, trocar sheath just can be pushed down inner sleeve, prevent that syringe needle and the pin wing from relatively moving or rotating, the pin wing can drive trocar sheath and inner sleeve synchronously to rotate, and the dynamics that medical worker only need to apply a little to the pin wing just can be adjusted the angle of puncture easily;
(3) hemodialysis puncture needle assembly of the present utility model, simple in structure, and medical personnel's singlehanded syringe needle of processing easily, can effectively avoid medical personnel to be occurred by needle sting or infected situation in operation.
Brief description of the drawings
Fig. 1 is shown as the structural representation of hemodialysis puncture needle assembly of the present utility model.
Fig. 2 is shown as the structural representation that the inner sleeve of hemodialysis puncture needle assembly of the present utility model is fixedly connected with syringe needle.
Fig. 3 is shown as the structure for amplifying schematic diagram of the trocar sheath of hemodialysis puncture needle assembly of the present utility model.
The A-A that Fig. 4 is shown as Fig. 3 to structural representation.
Fig. 5 is shown as the structural representation of the right flank of Fig. 3.
Fig. 6 is shown as the structural representation of the pin wing of hemodialysis puncture needle assembly of the present utility model.
Drawing reference numeral explanation
1 syringe needle
2 inner sleeves
21 annular fixture blocks
22 centring rings
23 collar stops
3 trocar sheaths
31 locating rings
32 wedge shape clamping blocks
33 toroidal cavities
The 4 pin wings
41 wing cylinders
42 alar parts
5 hollow-out parts
6 pin caps
7 hollow infusion tubes
8 connection tubes
9 flow-stopping clips
10 plugs
The radius of the outer circumference surface of r annular fixture block
L1 wedge shape clamping block front end end is to the distance of the central axis of trocar sheath
End, L2 wedge shape clamping block rear end is to the distance of the central axis of trocar sheath
The end, rear end of L3 wedge shape clamping block is to the distance of the front end end of trocar sheath
The front end end of L4 syringe needle is to the distance of the front end end of annular fixture block
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this description.
Refer to accompanying drawing.Notice, appended graphic the illustrated structure of this description, ratio, size etc., all contents in order to coordinate description to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of this utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that this utility model can produce and the object that can reach, all should still drop on the technology contents that this utility model discloses and obtain in the scope that can contain.Simultaneously, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of this utility model, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of this utility model without essence.
As shown in Figure 1, Fig. 1 is shown as the structural representation of hemodialysis puncture needle assembly of the present utility model.The hemodialysis puncture needle assembly of the present embodiment comprises: syringe needle 1, inner sleeve 2 and trocar sheath 3; Inner sleeve 2 and trocar sheath 3 are hollow circular tube, syringe needle 1 inserts inner sleeve 2 from the front end of inner sleeve 2, syringe needle 1 is fixedly connected with inner sleeve 2, and trocar sheath 3 is sheathed on the outside of inner sleeve 2 and can moves with respect to inner sleeve 2 the central axis conllinear of the central axis of trocar sheath 3 and inner sleeve 2;
As shown in Figure 2, Fig. 2 is shown as the structural representation that the inner sleeve of hemodialysis puncture needle assembly of the present utility model is fixedly connected with syringe needle.On the outer circumference surface of the front end of inner sleeve 2, be fixedly installed annular fixture block 21, on the outer circumference surface of the rear end of inner sleeve 2, be provided with centring ring 22, annular fixture block 21 and centring ring 22 central axis all with the central axis conllinear of inner sleeve 2;
As shown in Fig. 1, Fig. 3 to Fig. 5, Fig. 3 is shown as the structure for amplifying schematic diagram of the trocar sheath of hemodialysis puncture needle assembly of the present utility model, the A-A that Fig. 4 is shown as Fig. 3 to structural representation, Fig. 5 is shown as the structural representation of the right flank of Fig. 3.The inwall of the front end of trocar sheath 3 is provided with locating ring 31, and locating ring 31 is enclosed within on the outer circumference surface of annular fixture block 21;
As shown in Figure 2 to Figure 3, be evenly arranged at least two wedge shape clamping blocks 32 in same radial section on the inwall of the rear end of trocar sheath 3, in the present embodiment, wedge shape clamping block 32 is three, three wedge shape clamping block 120 °, 32 interval arrangements; Centring ring 22 is stuck between three wedge shape clamping blocks 32, the radius r of the outer circumference surface of annular fixture block 21 is less than the distance L 1 of wedge shape clamping block 32 front end ends to the central axis of trocar sheath 3, and is greater than the distance L 2 of wedge shape clamping block 32 ends, rear end to the central axis of trocar sheath 3.
Trocar sheath 3 is sheathed on the outside of inner sleeve 2, the centring ring 22 of inner sleeve 2 is stuck between three wedge shape clamping blocks 32 of trocar sheath 3, make the formation rear end axial location between trocar sheath 3 and inner sleeve 2, this rear end axial location is not fastening structure, this rear end axial location lost efficacy trocar sheath 3 at medical care people one hand in the time that the front end of syringe needle 1 advances, and centring ring 22 separates with wedge shape clamping block 32, the locating ring 31 of trocar sheath 3 is enclosed within on the outer circumference surface of annular fixture block 21, also make the formation front end axial location between trocar sheath 3 and inner sleeve 2, this front end axial location is not fastening structure, this front end axial location lost efficacy trocar sheath 3 at medical care people one hand in the time that the front end of syringe needle 1 advances, and locating ring 31 separates with annular fixture block 21, complete after dialysis, medical personnel can singlehandedly advance trocar sheath 3 to the front end of syringe needle 1, centring ring 22 is separated with wedge shape clamping block 32, locating ring 31 separates with annular fixture block 21, because the radius r of the outer circumference surface of annular fixture block 21 is less than the distance L 1 of wedge shape clamping block 32 front end ends to the central axis of trocar sheath 3, and be greater than the distance L 2 of wedge shape clamping block 32 ends, rear end to the central axis of trocar sheath 3, the end, rear end of wedge shape clamping block 32 is by behind the front end end of annular fixture block 21, annular fixture block 21 limits the position of trocar sheath 3, make the end, rear end of wedge shape clamping block 32 cannot pass through the front end end of annular fixture block 21, be that trocar sheath cannot move to the back-end,
Three wedge shape clamping blocks 32 in 120 ° of arrangements of same radial section and interval, can either coordinate with centring ring 22 and form axial location, again can be in the end, rear end of wedge shape clamping block 32 by after annular fixture blocks 21, form the firm structure that retreats of preventing.
The end, rear end of wedge shape clamping block 32 is more than or equal to the front end end of syringe needle 1 to the distance L 4 of the front end end of annular fixture block 21 to the distance L 3 of the front end end of trocar sheath 3, make trocar sheath 3 can cover the front end end of the part of syringe needle 1 in inner sleeve 2 outsides to syringe needle 1.
As shown in Fig. 1, Fig. 3 and Fig. 6, Fig. 6 is shown as the structural representation of the pin wing of hemodialysis puncture needle assembly of the present utility model.The outer wall of the front end of trocar sheath 3 is provided with toroidal cavity 33, and hemodialysis puncture needle assembly also comprises the pin wing 4, and this pin wing 4 comprises that wing cylinder 41 and two are arranged at respectively the alar part 42 of wing cylinder 41 both sides, and wing cylinder 41 covers are fixed in toroidal cavity 33.The pin wing 4 is for adjusting the angle of puncture.
As shown in Figure 4, the outer wall of the front end of trocar sheath 3 is provided with and corresponding four hollow-out parts 5 of the pin wing 4, four hollow-out parts 5 are in same radial section and the arrangement of 90 °, interval, hollow-out parts 5 extends to the front end end of trocar sheath 3 vertically, and hollow-out parts 5 radially extends to the inside of locating ring 31 from the outer wall of trocar sheath 3.
As shown in Figure 1 to Figure 3, holding the pin wing 4 makes trocar sheath 3 stressed, four hollow-out parts 5 are inwardly tightened up, trocar sheath 3 just can be pushed down inner sleeve 2, prevent that syringe needle 1 and the pin wing 4 from relatively moving or rotating, the pin wing 4 can drive trocar sheath 3 and inner sleeve 2 synchronously to rotate, and the dynamics that medical worker only need to apply a little to the pin wing 4 just can be adjusted the angle of parallel puncture easily.
The outer circumference surface of the rear end of inner sleeve 2 is provided with collar stop 23, and collar stop 23 contacts with the end, rear end of trocar sheath 3, and the size of collar stop 23 is greater than the size of the end, rear end of trocar sheath 3.This collar stop 23 prevents that the rear end that trocar sheath 3 completes forward direction inner sleeve 2 in dialysis from moving.
Hemodialysis puncture needle assembly also comprises pin cap 6, and pin cap 6 is enclosed within on syringe needle 1.Before hemodialysis puncture needle assembly uses, pin cap 6 is enclosed within on syringe needle 1, prevents that syringe needle 1 from stabbing medical worker.
In the present embodiment, the material of syringe needle 1 is medical stainless steel, and the external diameter of syringe needle 1 is 1.6mm, and length is 42mm, and the front end end of syringe needle 1 is to be the oblique angle of 18 °, and the length that syringe needle 1 inserts in inner sleeve 2 is 16mm; The material of inner sleeve 2 is medical grade silicon rubber, and the length of inner sleeve 2 is 52mm, and the diameter of inner sleeve 2 is increased to rear end successively by front end, and the external diameter of the front end end of inner sleeve 2 is 4mm, and the external diameter of the end, rear end of inner sleeve 2 is 15mm; The external diameter of trocar sheath 3 is 7mm, and length is 40mm, and the axial length of the hollow-out parts 5 of trocar sheath 3 front ends is 11mm; The pin wing 4 is buttferfly-type.
In the present embodiment, hemodialysis puncture needle assembly also comprises hollow infusion tube 7, connection tube 8, flow-stopping clip 9 and plug 10, the front-end and back-end of hollow infusion tube 7 are connected with inner sleeve 2 and connection tube 8 respectively, plug 10 can cover the rear end of connection tube 8, flow-stopping clip 9 is enclosed within hollow infusion tube 7 outsides, for controlling flowing of hollow infusion tube 7 interior liquid.
The material of hollow infusion tube 7 is medical grade silicon rubber, and the length of hollow infusion tube 7 is 10cm.The length of hollow infusion tube 7 reduces, and the waste liquid that can reduce hollow infusion tube 7 causes the risk of environmental pollution and medical staff infection, and reduces costs.
The using method of the hemodialysis puncture needle assembly of the present embodiment, comprises the following steps:
1) hemodialysis puncture needle assembly is taken out from packaging bag, now, trocar sheath 3 is sheathed on the outside of inner sleeve 2, the centring ring 22 of inner sleeve 2 snaps in the wedge shape clamping block 32 of trocar sheath 3, the locating ring 31 of trocar sheath 3 is enclosed within on the outer circumference surface of annular fixture block 21, and the end, rear end of trocar sheath 3 contacts with collar stop 23;
2) connection tube 8 is connected with dialyser, pull down pin cap 6, medical personnel carry out the artery and vein puncture before dialysis treatment with syringe needle 1 to sufferer, medical personnel hold the pin wing 4 makes trocar sheath 3 stressed, four hollow-out parts 5 are inwardly tightened up, and trocar sheath 3 just can be pushed down inner sleeve 2, and the pin wing 4 drives trocar sheath 3 and inner sleeve 2 synchronously to rotate, medical worker can adjust the angle of parallel puncture easily, opens dialysis machine;
3) complete after dialysis, connection tube 8 and dialyser are disconnected, plug 10 is covered to the rear end of connection tube 8;
4) medical worker presses point of puncture on the other hand, another hands is clamped hollow infusion tube 7 with palm and the third finger and little finger of toe, thumb and forefinger pinch trocar sheath 3 and are pushed ahead, in the time that three wedge shape clamping blocks 32 of trocar sheath 3 pass through annular fixture block 21, trocar sheath 3 dilatancies, in the time that three wedge shape clamping blocks 32 pass through annular fixture block 21, it is the front end end contact in annular fixture block 21 of the end, rear end of wedge shape clamping block 32, just can hear trocar sheath 3 from the annular fixture block 21 of inner sleeve 2 come off the sound that sends " ", now three wedge shape clamping blocks 32 are all before annular fixture block 21, trocar sheath 3 can cover the needle point of the part of syringe needle 1 in inner sleeve 2 outsides to syringe needle 1, the position of wedge shape clamping block 32 is limited by annular fixture block 21, trocar sheath 3 can not move to the back-end, make trocar sheath 3 effectively protect needle point.
5) hemodialysis puncture needle assembly is disposed, dialysis machine is received and kept.
This utility model provides a kind of faster, hemodialysis puncture needle assembly easily, hemodialysis puncture needle modular construction is simple, medical personnel can press point of puncture on the other hand, another hands is processed syringe needle 1, prevent that syringe needle 1 from exposing, can effectively avoid medical personnel to be stabbed by syringe needle 1 or infected situation in operation occurs, improve medical personnel's working condition.
To sum up, this utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting this utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that this utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (7)
1. a hemodialysis puncture needle assembly, is characterized in that, comprising: syringe needle (1), inner sleeve (2) and trocar sheath (3); Described inner sleeve (2) is hollow circular tube, and described syringe needle (1) inserts described inner sleeve (2) from the front end of described inner sleeve (2), and is fixedly connected with described inner sleeve (2); On the outer circumference surface of the front end of described inner sleeve (2), be fixedly installed annular fixture block (21), on the outer circumference surface of the rear end of described inner sleeve (2), be provided with centring ring (22);
Described trocar sheath (3) is hollow circular tube, described trocar sheath (3) is sheathed on the outside of described inner sleeve (2) and can moves vertically with respect to described inner sleeve (2) the central axis conllinear of the central axis of described trocar sheath (3) and described inner sleeve (2); The inwall of the front end of described trocar sheath (3) is provided with locating ring (31), and described locating ring (31) is enclosed within on the outer circumference surface of described annular fixture block (21);
On the inwall of the rear end of described trocar sheath (3), be evenly arranged at least two wedge shape clamping blocks (32) in same radial section, described centring ring (22) is stuck between at least two described wedge shape clamping blocks (32), the radius of the outer circumference surface of described annular fixture block (21) is less than the distance of described wedge shape clamping block (32) front end end to the central axis of described trocar sheath (3), and is greater than the distance of described wedge shape clamping block (32) end, rear end to the central axis of described trocar sheath (3); The end, rear end of described wedge shape clamping block (32) is more than or equal to the front end end of described syringe needle (1) to the distance of the front end end of described annular fixture block (21) to the distance of the front end end of described trocar sheath (3).
2. hemodialysis puncture needle assembly according to claim 1, is characterized in that: in the time that described wedge shape clamping block (32) is three, and three described wedge shape clamping blocks (32), 120 °, interval arrangement.
3. hemodialysis puncture needle assembly according to claim 1, it is characterized in that: the outer wall of the front end of described trocar sheath (3) is provided with toroidal cavity (33), described hemodialysis puncture needle assembly also comprises the pin wing (4), and the described pin wing (4) cover is fixed in described toroidal cavity (33).
4. hemodialysis puncture needle assembly according to claim 3, it is characterized in that: the outer wall of the front end of described trocar sheath (3) is provided with and corresponding four hollow-out parts of the described pin wing (4) (5), four described hollow-out parts (5) are in same radial section and the arrangement of 90 °, interval, described hollow-out parts (5) extends to the front end end of described trocar sheath (3) vertically, and described hollow-out parts (5) radially extends to the inside of described locating ring (31) from the outer wall of described trocar sheath (3).
5. hemodialysis puncture needle assembly according to claim 1, it is characterized in that: the outer circumference surface of the rear end of described inner sleeve (2) is provided with collar stop (23), described collar stop (23) contacts with the end, rear end of described trocar sheath (3), and the size of described collar stop (23) is greater than the size of the end, rear end of described trocar sheath (3).
6. hemodialysis puncture needle assembly according to claim 1, is characterized in that: also comprise pin cap (6), described pin cap (6) is enclosed within on described syringe needle (1).
7. hemodialysis puncture needle assembly according to claim 1, it is characterized in that: also comprise hollow infusion tube (7), the front end of described hollow infusion tube (7) is fixedly connected with the rear end of described inner sleeve (2), and the length of described infusion tube is 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241896.8U CN203874190U (en) | 2014-05-12 | 2014-05-12 | Hematodialysis puncture needle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241896.8U CN203874190U (en) | 2014-05-12 | 2014-05-12 | Hematodialysis puncture needle assembly |
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| Publication Number | Publication Date |
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| CN203874190U true CN203874190U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420241896.8U Expired - Fee Related CN203874190U (en) | 2014-05-12 | 2014-05-12 | Hematodialysis puncture needle assembly |
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| CN (1) | CN203874190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073842A1 (en) * | 2018-10-10 | 2020-04-16 | 上海契斯特医疗器械有限公司 | Puncturing positioning device and method for using same |
| CN112494116A (en) * | 2020-11-26 | 2021-03-16 | 鹰潭荣嘉集团医疗器械实业有限公司 | Disposable arteriovenous puncture ware |
-
2014
- 2014-05-12 CN CN201420241896.8U patent/CN203874190U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073842A1 (en) * | 2018-10-10 | 2020-04-16 | 上海契斯特医疗器械有限公司 | Puncturing positioning device and method for using same |
| CN112494116A (en) * | 2020-11-26 | 2021-03-16 | 鹰潭荣嘉集团医疗器械实业有限公司 | Disposable arteriovenous puncture ware |
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Granted publication date: 20141015 Termination date: 20160512 |
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| CF01 | Termination of patent right due to non-payment of annual fee |