CN111420171A

CN111420171A - Anti-reflux scalp needle

Info

Publication number: CN111420171A
Application number: CN202010303603.4A
Authority: CN
Inventors: 何琴; 胡建容; 肖小潇
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-07-17

Abstract

The invention discloses an anti-reflux scalp needle which comprises a needle head, a needle handle part, a handheld part, a transfusion tube and a sealing mechanism, wherein the handheld part is connected with the side end of the needle handle part, a filling part is arranged in the handheld part, the upper end of the filling part protrudes out of the surface of the handheld part, a filling cavity is arranged in the filling part, an opening is formed in one side, close to the needle handle part, of the filling cavity, fillers are arranged in the filling cavity, the outer wall of the filling cavity is made of elastic materials, a three-way tube is arranged in the needle handle part, the upper end of the three-way tube is communicated with the needle head, the lower end of the three-way tube is communicated with the transfusion tube, the side end of the three-way tube extends into the handheld part and is connected with the opening of the filling. When the scalp needle is pulled out, the blood in the needle head can be effectively prevented from flowing outwards, so that blood pollution is avoided, and the health and the safety of medical care personnel are guaranteed.

Description

Anti-reflux scalp needle

Technical Field

The invention relates to the field of medical instruments, in particular to an anti-reflux scalp needle.

Background

A scalp needle or an intravenous infusion needle is a needle commonly used in disease treatment, generally, the scalp needle consists of a needle head, a needle handle and an infusion tube, the needle head, the needle handle and the infusion tube are sequentially connected, the needle head is inserted into a vein of a patient during infusion, and the needle handle is kept outside the body. However, in clinical medicine, the use of the existing scalp needle has the following problems that a nurse needs to pull out the scalp needle of a patient mainly after the transfusion is finished, but the problem of blood outflow in the needle head often occurs when the needle is pulled out, so that blood pollution is caused, particularly the blood of some special patients possibly contains toxic substances, and the health of medical care personnel is threatened. Although the conventional infusion tube is provided with a liquid flow regulator, and the liquid flow regulator is closed after the infusion is completed, the flow of liquid in the infusion tube can be stopped, but blood in the needle can still flow out due to the fact that a long section of liquid remains in the infusion tube.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides the anti-reflux scalp needle, can effectively avoid the outflow of blood in the needle head when the needle is pulled out, reduces blood pollution, and ensures the health and safety of medical care personnel.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: anti-reflux scalp acupuncture, including syringe needle, needle stalk portion, handheld portion, transfer line and sealing mechanism, handheld portion is connected with needle stalk portion side end, be provided with the packing portion in the handheld portion, packing portion upper end protrusion in handheld portion surface, be provided with the packing cavity in the packing portion, it is provided with the opening to fill the cavity and be close to needle stalk portion one side, be provided with the filler in the packing cavity, it comprises elastic material to fill the cavity outer wall, be provided with the three-way pipe in the needle stalk portion, three-way pipe upper end and syringe needle intercommunication, lower extreme and transfer line intercommunication, the side stretch into handheld portion and with fill the opening of cavity and be connected, sealing mechanism sets up the one end that is close to the needle stalk portion at the transfer line, sealing mechanism is used for the sealed of liquid in the transfer line.

Preferably, the hand-held portion is connected to a sealing mechanism.

Preferably, the handheld portion is provided with a stop dog, the stop dog penetrates through the handheld portion and is movably connected with the handheld portion, the stop dog is arranged between the side end of the three-way pipe and the opening of the filling cavity, the stop dog comprises an upper end portion and a lower end portion, the lower end portion of the stop dog is clamped in the handheld portion, the upper end portion of the stop dog protrudes out of the surface of the handheld portion, the upper end portion of the stop dog is provided with a through hole, the through hole is matched with the side end of the three-way pipe and the opening of the filling cavity in shape, and the top end of the.

Preferably, the handheld portion includes that the activity is handed the board and is fixed handheld board, the activity is handed the board and is fixed handheld board symmetry and set up the both sides at the needle stalk portion, the activity is handed the board and is articulated with the needle stalk portion, fixed handheld board and needle stalk portion fixed connection, the packing portion sets up in fixed handheld board.

Preferably, sealing mechanism includes closing plate and fixed plate, the fixed plate sets up in the transfer line below, the closing plate sets up in fixed plate one end and is articulated with the fixed plate, be provided with the connecting piece on the closing plate, be provided with the locating part on the fixed plate, the closing plate is rotatory to be made the connecting piece be connected with the locating part and play the effect of damming to the liquid in the transfer line.

Preferably, the connecting piece is a hanging rope which is arranged at the outer side end of the sealing plate; the locating part is a hook, and the hook is arranged at the outer side end of the fixing plate.

Further preferably, a pressing strip is transversely arranged on the sealing plate.

Still more preferably, the filler is soft silica gel.

The invention has the following beneficial effects:

firstly), the sealing mechanism in the invention seals the liquid in the infusion tube in a cut-off manner, then presses the filling part when the needle is pulled out, extrudes the filler in the filling cavity into the three-way tube, then pulls the needle out of the patient body, immediately loosens the filling part, the filler extruded in the three-way tube returns to the filling cavity, a section of vacuum area is generated in the three-way tube, and the negative pressure enables the blood in the needle to be sucked back into the three-way tube, thereby preventing the blood from flowing outwards, avoiding the blood pollution and ensuring the health and safety of medical care personnel;

the invention has simple structure, small volume and simple operation, can be well integrated into the actual clinical medical work, and can effectively improve the working efficiency.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a view showing the structure of FIG. 3 after the stopper is pressed downward;

fig. 5 is a perspective view of the sealing mechanism of fig. 1.

In the figure: the device comprises a needle head 1, a needle handle 2, a tee pipe 3, a handheld part 4, a fixed handheld plate 401, a movable handheld plate 402, a filling part 5, a filling cavity 6, a sealing mechanism 7, a fixing plate 701, a sealing plate 702, a connecting piece 703, a limiting piece 704, a pressing strip 705, a transfusion pipe 8, a stop block 9, a through hole 10 and a limiting block 11.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

The hand-held part 4 and the sealing mechanism 7 can be separately and independently arranged, and can also be movably connected or fixedly connected.

Example 1

As shown in fig. 1 and 2, the anti-reflux scalp needle comprises a needle head 1, a needle handle portion 2, a handheld portion 4, a transfusion tube 8 and a sealing mechanism 7, wherein the handheld portion 4 is connected with the side end of the needle handle portion 2, a filling portion 5 is arranged in the handheld portion 4, the upper end of the filling portion 5 protrudes out of the surface of the handheld portion 4, a filling cavity 6 is arranged in the filling portion 5, an opening is formed in one side, close to the needle handle portion 2, of the filling cavity 6, a filler is arranged in the filling cavity 6, the outer wall of the filling cavity 6 is made of an elastic material, a three-way pipe 3 is arranged in the needle handle portion 2, the upper end of the three-way pipe 3 is communicated with the needle head 1, the lower end of the three-way pipe 8 is communicated with the transfusion tube 8, the side end of the filling cavity 6 extends into the handheld portion 4.

In the embodiment, the sealing mechanism 7 and the handheld part 4 are separately and independently arranged, when a scalp needle is pulled out, the sealing mechanism 7 is firstly used for intercepting and sealing liquid in the infusion tube 8, then the filling part 5 is pressed, and as the outer wall of the filling cavity 6 is made of an elastic material, the outer wall of the filling part 5 sinks to extrude the filler in the filling cavity 6 into the three-way tube 3; in the embodiment, the filler is soft silica gel which is a commonly used material in medical instruments, does not contain harmful substances, is highly soft and has very strong deformation recovery capability. Extract the back with syringe needle 1, loosen immediately and press to filling portion 5, the filler resumes to press the preceding state and gets back to in filling cavity 6 from three-way pipe 3, produces one section vacuum area between three-way pipe 3 and the syringe needle 1, and vacuum negative pressure prevents that blood from flowing out from syringe needle 1 in with the blood suck-back entering three-way pipe 3 in the syringe needle 1, guarantee medical personnel's health and safety.

As shown in fig. 1 to 4, a stopper 9 is arranged on the handheld portion 4, the stopper 9 penetrates through the handheld portion 4 and is movably connected with the handheld portion 4, the stopper 9 is arranged between the side end of the three-way pipe 3 and the opening of the filling chamber 6, the stopper 9 comprises an upper end portion and a lower end portion, the lower end portion of the stopper 9 is connected in the handheld portion 4 in a clamping manner, the upper end portion of the stopper 9 protrudes out of the surface of the handheld portion 4, a through hole 10 is arranged at the upper end portion of the stopper 9, the through hole 10 is matched with the side end of the three-way pipe 3 and the opening of the filling chamber 6 in shape, and. When the scalp needle is in a natural state, the lower end part of the stop block 9 is clamped between the side end of the three-way pipe 3 and the opening of the filling chamber 6 to block the communication between the side end of the three-way pipe 3 and the filling chamber 6; when pulling out the needle, press dog 9 downwards, the tip stretches out from 4 bottoms of handheld portion under dog 9, and dog 9 upper end downstream and joint are between 3 sides of three-way pipe and the 6 openings of filling cavity, and at this moment, stopper 11 on dog 9 top prevents dog 9 to continue downstream, and through-hole 10 of dog 9 upper end communicates 3 sides of three-way pipe with 6 openings of filling cavity, makes the interior soft silica gel of filling cavity 6 can extrude entering three-way pipe 3. The arrangement of the stop block 9 can avoid the soft silica gel from being extruded into the three-way pipe 3 before the needle is pulled out, thereby causing influence on the infusion process and further improving the use safety of the scalp needle.

As shown in fig. 1, the hand-held part 4 comprises a movable hand-held plate 402 and a fixed hand-held plate 401, the movable hand-held plate 402 and the fixed hand-held plate 401 are symmetrically arranged at two sides of the needle handle part 2, the movable hand-held plate 402 is hinged with the needle handle part 2, the fixed hand-held plate 401 is fixedly connected with the needle handle part 2, and the filling part 5 is arranged in the fixed hand-held plate 401. As shown in fig. 2, 3 and 4, when the needle is pulled out, the movable handheld plate 402 is rotated towards the fixed handheld plate 401 and is stacked on the fixed handheld plate 401, the stop block 9 can move downwards by pressing the movable handheld plate 402 and the fixed handheld plate 401, the side end of the three-way pipe is communicated with the opening of the filling cavity by the through hole 10 at the upper end part of the stop block 9, meanwhile, the filler in the filling cavity 6 is extruded into the three-way pipe 3 through the through hole 10, the operation can be completed by immediately loosening the movable handheld plate 402 after the needle head 1 is pulled out, the needle is convenient for medical workers to use in actual operation, and the working efficiency is improved.

As shown in fig. 5, the sealing mechanism 7 includes a sealing plate 702 and a fixing plate 701, the fixing plate 701 is disposed below the infusion tube 8, the sealing plate 702 is disposed at one end of the fixing plate 701 and is hinged to the fixing plate 701, a connecting member 703 is disposed on the sealing plate 702, a stopper 704 is disposed on the fixing plate 701, and the sealing plate 702 rotates to connect the connecting member 703 and the stopper 704 and stop the liquid in the infusion tube 8. In this embodiment, the connecting member 703 is a hanging rope, and the hanging rope is disposed at the outer end of the sealing plate 702; the stopper 704 is a hook provided on the outer end of the fixing plate 701. The sealing plate 702 is rotated towards the direction of the fixing plate 701, the hanging rope on the sealing plate 702 is hung on the hook on the fixing plate 701 to limit the sealing plate 702, and at the moment, the sealing plate 702 presses the infusion tube 8 on the fixing plate 701 to play a role in intercepting and sealing the liquid in the infusion tube 8. The sealing plate 702 is transversely provided with a pressing strip 705, and the pressing strip 705 presses the infusion tube 8, so that the sealing performance can be further improved.

Example 2

In this embodiment, the handle 4 is connected to the sealing mechanism 7, for example, the movable handle plate 402 is movably connected to the sealing plate 702, and the fixed handle plate 401 is fixedly connected to the fixed plate 701 as a whole. When the sealing plate 702 is rotated to the fixing plate 701, the sealing plate 702 can drive the movable handheld plate 402 to rotate, so that the operation steps can be simplified, and the working efficiency can be improved.

The present specification and figures are to be regarded as illustrative rather than restrictive, and it is intended that all such alterations and modifications that fall within the true spirit and scope of the invention, and that all such modifications and variations are included within the scope of the invention as determined by the appended claims without the use of inventive faculty.

Claims

1. Anti-reflux scalp acupuncture, its characterized in that, including syringe needle, needle stalk portion, handheld portion, transfer line and sealing mechanism, handheld portion is connected with needle stalk portion side end, be provided with the packing portion in the handheld portion, packing portion upper end protrusion in handheld portion surface, be provided with the packing cavity in the packing portion, it is provided with the opening to fill the cavity and be close to needle stalk portion one side, be provided with the filler in the packing cavity, it comprises elastic material to fill the cavity outer wall, be provided with the three-way pipe in the needle stalk portion, three-way pipe upper end and syringe needle intercommunication, lower extreme and transfer line intercommunication, the side stretch into handheld portion and with fill the opening of cavity and be connected, sealing mechanism sets up the one end that is close to the needle stalk portion at the transfer line, sealing mechanism is used for the sealed of liquid in the transfer line.

2. Anti-reflux scalp needle according to claim 1, characterized in that the hand-held portion is connected with a sealing mechanism.

3. The anti-reflux scalp needle according to claim 1 or 2, wherein a stopper is arranged on the hand-held portion, the stopper penetrates through the hand-held portion and is movably connected with the hand-held portion, the stopper is arranged between the side end of the three-way pipe and the opening of the filling chamber, the stopper comprises an upper end portion and a lower end portion, the lower end portion of the stopper is clamped in the hand-held portion, the upper end portion of the stopper protrudes out of the surface of the hand-held portion, the upper end portion of the stopper is provided with a through hole, the through hole is matched with the side end of the three-way pipe and the opening of the filling chamber in shape, and a limiting block.

4. The anti-reflux scalp needle according to claim 1 or 2, wherein the hand-held portion comprises a movable hand-held plate and a fixed hand-held plate, the movable hand-held plate and the fixed hand-held plate are symmetrically arranged at two sides of the needle handle portion, the movable hand-held plate is hinged with the needle handle portion, the fixed hand-held plate is fixedly connected with the needle handle portion, and the filling portion is arranged in the fixed hand-held plate.

5. The anti-reflux scalp needle according to claim 1 or 2, wherein the sealing mechanism comprises a sealing plate and a fixing plate, the fixing plate is disposed under the infusion tube, the sealing plate is disposed at one end of the fixing plate and hinged to the fixing plate, a connecting member is disposed on the sealing plate, a limiting member is disposed on the fixing plate, and the sealing plate rotates to connect the connecting member with the limiting member and cut off the liquid in the infusion tube.

6. The anti-reflux scalp needle according to claim 5, wherein the connecting member is a hanging cord disposed on the outer side end of the sealing plate; the locating part is a hook, and the hook is arranged at the outer side end of the fixing plate.

7. The anti-reflux scalp needle of claim 5, wherein a bead is transversely disposed on the sealing plate.

8. Anti-reflux scalp needle according to claim 1, characterized in that the filler is soft silicone.