CN214129773U - Medical automatic needle withdrawing indwelling needle - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, in particular to a medical automatic needle withdrawing indwelling needle, which comprises a needle seat and a needle core, wherein the front end of the inner cavity of the needle seat is provided with a transfusion cavity communicated with a transfusion tube, the needle core is arranged in the center of the needle seat, one end of the needle core with a slope surface sequentially penetrates through a locking seat, a second spring fixing seat, a first spring fixing seat, a second isolating plug, a first isolating plug and the transfusion cavity arranged in the needle seat and extends out of the needle seat, the other end of the needle core is fixed with a needle handle, and a spring is sleeved between the first spring fixing seat and the second spring fixing seat outside the needle core; the needle core is closely provided with a needle tube outside the section extending out of the needle seat, one end of the needle tube is fixedly connected with the front end of the needle seat, and the other end of the sleeve extends to a slope close to the needle core; the needle core is provided with a lock catch at one end close to the needle handle, and the lock catch seat is provided with an L-shaped lock channel which is matched and locked with the lock catch. The remaining needle of the utility model can automatically withdraw, and the problem that the needle point punctures the blood vessel and fails puncture due to the fact that the needle core can not be withdrawn in time is avoided.

Description

Medical automatic needle withdrawing indwelling needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to medical automatic needle formula of moving back indwelling needle.

Background

The use of the indwelling needle can reduce the pain and the fear of the needle of the sick child caused by repeated venipuncture, and reduce the workload of nurses, so the indwelling needle is widely applied clinically. An indwelling needle, also called a trocar, is an infusion device that pierces a cannula and a stylet into a blood vessel during puncture, and then withdraws the stylet after the cannula is fed into the blood vessel, leaving only a soft outer cannula in the blood vessel for infusion. However, the existing indwelling needle cannot automatically withdraw the needle core, the needle core withdrawing usually needs to be operated by both hands, especially when a patient child is easy to move, one patient limb is pressed, the other patient limb still needs to withdraw the needle core, the phenomenon that the needle point punctures the blood vessel due to the fact that the needle core cannot be withdrawn in time and puncture failure occurs easily occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, a medical automatic needle formula of moving back is provided and is kept somewhere needle has solved current needle of keeping somewhere and can not move back the needle core automatically and appear moving back the needle core and not reach the hour hand and cause the puncture of point to break the blood vessel and the problem that puncture failed appears.

In order to realize the purpose, the utility model discloses a technical scheme as follows: a medical automatic needle withdrawing indwelling needle comprises a needle seat and a needle core, wherein the needle seat is provided with a hollow inner cavity, the front end of the inner cavity of the needle seat is provided with a transfusion cavity communicated with a transfusion tube, a first isolating plug, a second isolating plug, a first spring fixing seat, a second spring fixing seat and a lock catch seat are sequentially arranged in the needle seat from the end of the transfusion cavity to the rear end, the second isolating plug is fixedly connected with the first spring fixing seat, and the lock catch seat is in threaded connection with the inner wall of the needle seat; the needle core is arranged in the center of the needle seat, one end of the needle core with a slope surface sequentially penetrates through the locking seat, the second spring fixing seat, the first spring fixing seat, the second isolating plug, the first isolating plug and the infusion cavity and extends out of the needle seat, a needle handle is fixed at the other end of the needle core, the second spring fixing seat is fixedly connected with the needle core, a spring is sleeved between the first spring fixing seat and the second spring fixing seat outside the needle core, and two ends of the spring are respectively connected with the first spring fixing seat and the second spring fixing seat; the needle core extends out of one section of the needle seat and is closely provided with a needle tube, one end of the needle tube is fixedly connected with the front end of the needle seat, and the other end of the needle tube extends to a slope close to the needle core; the needle core is provided with a lock catch at one end close to the needle handle, and the lock catch seat is provided with an L-shaped lock channel matched and locked with the lock catch.

Furthermore, the distance between the lower edge of the slope surface of the needle core and the front end of the needle tube is 1-2 mm.

Furthermore, still be equipped with the protective sheath outside the needle file, the one end of protective sheath with the front end of needle file can be dismantled and be connected, the length of protective sheath is greater than the stylet stretches out one section length of needle file.

Furthermore, a butterfly handle is fixedly connected to the outer side of the needle handle, and the butterfly handle extends from the needle handle to the position of the infusion cavity of the needle seat.

Furthermore, the end part of the infusion tube is connected with a sealing cap.

Furthermore, a clamping groove is formed in one end, close to the second isolating plug, of the first isolating plug, and a clamping block matched and clamped with the clamping groove is arranged on the second isolating plug.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses an indwelling needle includes needle file and nook closing member, sets up first isolation stopper, second isolation stopper, first spring fixing base, second spring fixing base and hasp seat in the needle file, is equipped with L type lock way on the hasp seat, is equipped with the needle handle on the nook closing member, and be equipped with the hasp with L type lock way cooperation locking on the nook closing member, during the puncture, press the needle handle, make the nook closing member move inwards, second spring fixing base follows the nook closing member and moves inwards, compression spring, the nook closing member drives the hasp and inserts L type lock way and move to L type lock way bottom simultaneously, rotate the nook closing member and can lock with L type lock way; when the puncture is completed and the needle needs to be withdrawn, the needle core is rotated again to enable the lock catch and the L-shaped lock channel to be in an unlocked state, the lock catch and the L-shaped lock channel are stressed by the resilience force of the spring, the second spring fixing seat moves outwards to the initial position, and meanwhile, the needle core is driven to move outwards, so that the lock catch automatically withdraws from the L-shaped lock channel, the automatic needle withdrawing operation is realized, the problem that the needle point punctures the blood vessel due to the fact that the needle point cannot withdraw from the needle core in time is avoided, and the work difficulty of medical staff is greatly reduced.

Drawings

Fig. 1 is a schematic structural view of the medical automatic needle withdrawing indwelling needle of the present invention.

The reference numbers in the figures are: 1-a needle seat, 2-a needle handle, 3-a first isolating plug, 4-a second isolating plug, 5-a first spring fixing seat, 6-a second spring fixing seat, 7-a locking seat, 8-a locking buckle, 9-a spring, 10-a butterfly-shaped handle, 11-an infusion tube, 12-a sealing cap, 13-a needle core, 14-a needle tube, 15-an infusion cavity and 16-a protective sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

As shown in figure 1, the medical automatic needle withdrawing indwelling needle comprises a needle seat 1 and a needle core 13, wherein the needle seat 1 is provided with a hollow inner cavity, the front end of the inner cavity of the needle seat 1 is provided with a transfusion cavity 15 communicated with a transfusion tube 11, and the end part of the transfusion tube 11 is connected with a sealing cap 12. Follow in the needle file 1 infusion chamber 15 ends are equipped with first isolation stopper 3, second isolation stopper 4, first spring fixing base 5, second spring fixing base 6 and hasp seat 7 towards the rear end in proper order, second isolation stopper 4 with first spring fixing base 5 fixed connection, hasp seat 7 with 1 inner wall threaded connection of needle file. The needle core 13 is arranged at the center of the needle seat 1, one end of the needle core 13 with a slope surface sequentially penetrates through the locking seat 7, the second spring fixing seat 6, the first spring fixing seat 5, the second isolating plug 4, the first isolating plug 3 and the infusion cavity 15 and extends out of the needle seat 1, and the other end of the needle core 13 is fixedly provided with a needle handle 2. The second spring fixing seat 6 is fixedly connected with the stylet 13, a spring 9 is sleeved outside the stylet 13 and positioned between the first spring fixing seat 5 and the second spring fixing seat 6, and two ends of the spring 9 are respectively connected with the first spring fixing seat 5 and the second spring fixing seat 6; the needle core 13 extends out of one section of the needle seat 1 and is closely provided with a needle tube 14, one end of the needle tube 14 is fixedly connected with the front end of the needle seat 1, the other end of the needle tube 14 extends to a position close to the slope of the needle core 13, and preferably, the distance between the slope lower edge of the needle core 13 and the front end of the needle tube 14 is 1-2 mm. The last one end that is close to the needle handle 2 of nook closing member 13 is equipped with hasp 8, be equipped with on the hasp seat 7 with L type locked way (not shown in the figure) of hasp 8 cooperation locking, when pressing needle handle 2, hasp 8 inserts L type locked way and rotates needle handle 2 after moving to L type locked way bottom, can lock hasp 8 and L type locked way.

In order to protect the needle core 13, a protecting sleeve 16 is further arranged outside the needle tube 14, one end of the protecting sleeve 16 is detachably connected with the front end of the needle base 1, a threaded connection or an insertion connection mode can be adopted, and the length of the protecting sleeve 16 is greater than the length of the needle core 13 extending out of the needle base 1 for a section. When the needle is not used, the protective sleeve 16 can protect the needle core 13, and when the needle is used, the protective sleeve 16 is only required to be taken down. In addition, a butterfly handle 10 is fixedly connected to the outer side of the needle handle 2, the butterfly handle 10 extends from the needle handle 2 to the position of the infusion cavity 15 of the needle seat 1, and the butterfly handle 10 facilitates puncture operation. In order to facilitate safe separation of the needle core 13 and the needle tube 14 after puncture, a clamping groove 16 is arranged at one end of the first isolating plug 3 close to the second isolating plug 4, and a clamping block 17 matched and clamped with the clamping groove 16 is arranged on the second isolating plug 4.

The utility model discloses a theory of operation does: during puncture, press handle 2, make nook closing member 13 move inwards, second spring fixing base 6 follows nook closing member 13 and moves inwards, compression spring, and the nook closing member drives hasp 8 and inserts L type lock way and move to L type lock way bottom simultaneously, rotates handle 2 through butterfly handle 10 afterwards, can lock hasp 8 and L type lock way. When the needle needs to be withdrawn after the puncture is completed, the needle core 13 is rotated again through the butterfly handle 10, so that the lock catch 8 and the L-shaped lock channel are in an unlocked state, the second spring fixing seat 6 moves outwards to the initial position under the action of resilience force of the spring 9, and meanwhile, the needle core 13 is driven to move outwards, so that the lock catch 8 automatically withdraws from the L-shaped lock channel, and the automatic needle withdrawing operation is realized. After withdrawing the needle, the locking seat 7 is screwed out, the clamping block 17 of the second isolating plug is separated from the clamping groove 16 of the first isolating plug, and then the needle core 13 can be taken down from the needle seat 1, so that the safe separation of the needle core 13 and the needle tube 14 is realized.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Claims (6)

1. The utility model provides a medical automatic needle formula of moving back indwelling needle, includes needle file and nook closing member, the needle file has hollow inner chamber, its characterized in that: the front end of the inner cavity of the needle seat is provided with a transfusion cavity communicated with a transfusion tube, a first isolating plug, a second isolating plug, a first spring fixing seat, a second spring fixing seat and a lock catch seat are sequentially arranged in the needle seat from the end of the transfusion cavity to the rear end, the second isolating plug is fixedly connected with the first spring fixing seat, and the lock catch seat is in threaded connection with the inner wall of the needle seat; the needle core is arranged in the center of the needle seat, one end of the needle core with a slope surface sequentially penetrates through the locking seat, the second spring fixing seat, the first spring fixing seat, the second isolating plug, the first isolating plug and the infusion cavity and extends out of the needle seat, a needle handle is fixed at the other end of the needle core, the second spring fixing seat is fixedly connected with the needle core, a spring is sleeved between the first spring fixing seat and the second spring fixing seat outside the needle core, and two ends of the spring are respectively connected with the first spring fixing seat and the second spring fixing seat; the needle core extends out of one end of the needle seat, a needle tube is arranged in a close contact manner, one end of the needle tube is fixedly connected with the front end of the needle seat, and the other end of the needle tube extends to a slope close to the needle core; the needle core is provided with a lock catch at one end close to the needle handle, and the lock catch seat is provided with an L-shaped lock channel matched and locked with the lock catch.

2. The medical automatic needle withdrawing indwelling needle according to claim 1, wherein: the distance between the lower edge of the slope surface of the needle core and the front end of the needle tube is 1-2 mm.

3. The medical automatic needle withdrawing indwelling needle according to claim 1, wherein: the needle seat is characterized in that a protective sleeve is further arranged outside the needle tube, one end of the protective sleeve is detachably connected with the front end of the needle seat, and the length of the protective sleeve is larger than that of the needle core extending out of one section of the needle seat.

4. The medical automatic needle withdrawing indwelling needle according to claim 1, wherein: a butterfly handle is fixedly connected to the outer side of the needle handle, and extends from the needle handle to the position of the infusion cavity of the needle seat.

5. The medical automatic needle withdrawing indwelling needle according to claim 1, wherein: the end part of the infusion tube is connected with a sealing cap.

6. The medical automatic needle withdrawing indwelling needle according to claim 1, wherein: the first isolation plug is close to one end of the second isolation plug is provided with a clamping groove, and the second isolation plug is provided with a clamping block which is matched and clamped with the clamping groove.

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