CN214807437U - Composite injection needle capable of detecting whether entering blood vessel - Google Patents
Composite injection needle capable of detecting whether entering blood vessel Download PDFInfo
- Publication number
- CN214807437U CN214807437U CN202121663097.6U CN202121663097U CN214807437U CN 214807437 U CN214807437 U CN 214807437U CN 202121663097 U CN202121663097 U CN 202121663097U CN 214807437 U CN214807437 U CN 214807437U
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- Prior art keywords
- needle
- injection needle
- movable
- cavity
- blood vessel
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Abstract
The utility model relates to the technical field of medical equipment, and discloses a composite injection needle capable of detecting whether to enter a blood vessel, which comprises an outer injection needle and an inner injection needle sleeved in the outer injection needle, wherein the outer injection needle comprises an outer needle seat, an installation cavity is arranged in the outer needle seat, the front end of the outer needle seat is provided with an outer puncture needle communicated with the installation cavity, the side surface of the outer needle seat is provided with a catheter connector communicated with the installation cavity, and a catheter is connected on the catheter connector; the inner injection needle comprises an inner needle seat extending into the mounting cavity, an inner puncture needle sleeved in the outer puncture needle is arranged at the front end of the inner needle seat, a gap is arranged between the outer puncture needle and the inner puncture needle, an opening is arranged on the side wall of the outer puncture needle and positioned at the front end, and the front end of the inner puncture needle extends to the opening. Through the structure, when the composite injection needle is penetrated into the skin, whether blood exists in the outer needle base is observed, whether the injection needle is penetrated into the blood vessel is judged, embolism is avoided, and operation is convenient to carry out.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically speaking relates to a whether go into vascular compound syringe needle of detectable.
Background
Injection needles are the most commonly used medical devices in clinical settings, and are commonly used to inject drugs into the body, and also to aspirate fluids or soft tissues for diagnostic or therapeutic purposes.
In the cosmetic surgery, hyaluronic acid or fat is frequently required to be injected subcutaneously, in the process of subcutaneous injection, a needle easily punctures a blood vessel, once the blood vessel is punctured, if hyaluronic acid or fat is not injected, the hyaluronic acid or fat is easily caused to be embolism, and the existing needle cannot visually observe whether the blood vessel is punctured, so that the normal operation of the surgery is influenced.
SUMMERY OF THE UTILITY MODEL
Whether the unable audio-visual observation of syringe needle that exists punctures the blood vessel among the prior art, influences the defect that the operation normally goes on, the utility model provides a whether the compound syringe needle of going into blood vessel of detectable. The blood vessel puncture reminding device can prompt a doctor to stop injection after a syringe needle punctures a blood vessel, avoids embolism and ensures the safety of operation.
In order to solve the above technical problem, the present invention solves the above technical problems.
A composite injection needle capable of detecting whether a patient enters a blood vessel or not comprises an outer injection needle and an inner injection needle sleeved in the outer injection needle, wherein the outer injection needle comprises an outer needle base, an installation cavity is arranged in the outer needle base, an outer puncture needle communicated with the installation cavity is arranged at the front end of the outer needle base, a catheter connector communicated with the installation cavity is arranged on the side surface of the outer needle base, and a catheter is connected to the catheter connector; the inner injection needle comprises an inner needle seat extending into the mounting cavity, an inner puncture needle sleeved in the outer puncture needle is arranged at the front end of the inner needle seat, a gap is arranged between the outer puncture needle and the inner puncture needle, an opening is arranged on the side wall of the outer puncture needle and positioned at the front end, and the front end of the inner puncture needle extends to the opening.
Through the utility model provides a structure for when compound syringe needle pierces in the skin, whether there is blood in observing the outer needle file, judge whether the syringe needle pierces in the blood vessel, avoid the appearance of embolism, the going on of the operation of being convenient for.
Preferably, the outer side of the inner needle base is sleeved with a sealing plug, and the sealing plug is used for fixing the inner needle base in the installation cavity, and preferably fixing the inner injection needle in the outer injection needle.
Preferably, a fixing mechanism for fixing the inner needle holder is provided in the mounting cavity, and the inner injection needle is further fixed.
Preferably, the fixing mechanism comprises a fixing ring, the fixing ring is provided with a through hole for the inner needle seat to pass through, movable cavities communicated with the through hole are symmetrically arranged in the fixing ring along the radial direction of the fixing ring, and the side surface, facing the sealing plug, of the fixing ring is provided with a passage communicated with the corresponding movable cavities along the axial direction of the fixing ring; a blocking ring is arranged at the opening of the movable cavity, a movable block is arranged in the movable cavity, a movable rod penetrating through the blocking ring and extending into the through hole is arranged on the movable block, a spring pushing the movable block to move into the movable cavity is sleeved on the movable rod positioned in the movable cavity, a clamping block matched with the inner needle seat is arranged on the movable rod extending into the through hole, and a first inclined surface is arranged on the movable block; a slidable push block is arranged in the moving channel, a second inclined plane which is matched with the first inclined plane to push the movable rod to extend out of the movable cavity is arranged on the push block, and a stop ring matched with the plugging plug is arranged between the end parts of the push block positioned in the installation cavity.
Through the utility model provides a structure for the in-process that outer injection needle was emboliaed to interior injection needle, shutoff stopper extrusion ejector pad stretches into the capable way in, drives the movable rod and stretches out movable chamber, drives the fixed interior needle file of fixture block extrusion, makes interior injection needle further fix in outer injection needle.
Preferably, the fixing ring is installed in the installation cavity in a threaded mode, and the fixing ring is preferably installed in the installation cavity in an assembling mode.
Preferably, the plugging ring is installed in the movable cavity in a threaded manner, and the plugging ring is preferably assembled and disassembled in the movable cavity.
Drawings
FIG. 1 is a schematic view of a composite injection needle capable of detecting whether it enters a blood vessel according to example 1;
fig. 2 is a schematic cross-sectional view of the composite injection needle in example 1;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 2;
fig. 5 is an enlarged schematic view of a portion C in fig. 4.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention only and are not limiting.
Example 1
As shown in fig. 1, 2 and 3, the present embodiment provides a composite injection needle capable of detecting whether to enter a blood vessel, which includes an outer injection needle and an inner injection needle, the outer injection needle includes an outer needle base 100, a mounting cavity 211 is provided in the outer needle base 100, an outer puncture needle 101 is provided at the front end of the outer needle base 100, the outer puncture needle 101 is communicated with the mounting cavity 211, a catheter adapter 102 is provided on the side surface of the outer needle base 100, the catheter adapter 102 is communicated with the mounting cavity 211, and a catheter 120 is connected to the catheter adapter 102; the inner injection needle comprises an inner needle seat 110 extending into the mounting cavity 211, an inner puncture needle 221 is arranged at the front end of the inner needle seat 110, the inner puncture needle 221 extends into the outer puncture needle 101, a gap is arranged between the inner puncture needle 221 and the outer puncture needle 101, an opening 311 is arranged on the side wall of the outer puncture needle 101 and located at the front end, and the front end of the inner puncture needle 221 extends to the opening 311.
In this embodiment, the front end of the outer puncture needle 101 is a blunt head, an opening 311 is formed on the side wall thereof, the front end of the inner puncture needle 221 extends to the opening 311, in the actual use process, the catheter 120 is connected with the negative pressure syringe, the inner injection needle is connected with the injector, and the outer injection needle and the inner injection needle puncture the skin to perform injection of hyaluronic acid. When the outer injection needle and the inner injection needle puncture the blood vessel, blood enters the gap between the inner puncture needle 221 and the outer puncture needle 101 through the opening 311, in the embodiment, the outer needle seat 100 is made of transparent material, and when the blood is observed in the outer needle seat 100, the injection of hyaluronic acid is stopped; when there is no blood in the outer hub 100, the catheter 120 is closed and injection of hyaluronic acid can be performed by a syringe.
In the embodiment, as shown in fig. 4, a sealing plug 411 is sleeved outside the inner needle holder 110, and the sealing plug 411 is used for fixing the inner needle holder 110 in the mounting cavity 211.
In this embodiment, the plugging plug 411 is made of rubber, and when the inner injection needle is in the process of being sleeved into the outer injection needle, the plugging plug 411 is extruded with the rear end opening side wall of the outer needle base 100, so that the inner injection needle is fixed in the outer injection needle, and meanwhile, the plugging plug 411 can plug the rear end opening of the outer needle base 100, thereby ensuring the sealing of the outer needle base 100.
As shown in fig. 4 and 5, a fixing mechanism for fixing the inner needle holder 110 is provided in the mounting cavity 211.
In this embodiment, the inner needle base 110 is fixed by the fixing mechanism, so that the shaking of the inner injection needle is avoided, and the use of the composite injection needle is not affected.
In this embodiment, the fixing mechanism includes a fixing ring 420, the fixing ring 420 is provided with a through hole 511 for the inner needle base 110 to pass through, the fixing ring 420 is internally provided with movable cavities 512 communicating with the through hole 511 along the radial direction of the fixing ring 420, and the side surface of the fixing ring 420 facing the sealing plug 411 is provided with a passage 513 communicating with the corresponding movable cavities 512 along the axial direction of the fixing ring 420; a blocking ring 520 is arranged at an opening of the movable cavity 512, a movable block 530 is arranged in the movable cavity 512, a movable rod 531 penetrating through the blocking ring 520 and extending into the through hole 511 is arranged on the movable block 530, a spring 540 pushing the movable block 530 to move towards the movable cavity 512 is sleeved on the movable rod 531 in the movable cavity 512, a clamping block 532 matched with the inner needle seat 110 is arranged on the movable rod 531 extending into the through hole 511, and a first inclined plane 533 is arranged on the movable block 530; a slidable push block 550 is arranged in the runner 513, a second inclined surface 551 which is matched with the first inclined surface 533 and pushes the movable rod 531 to extend out of the movable cavity 512 is arranged on the push block 550, and a stop ring matched with the seal plug 411 is arranged between the end parts of the push block 550 in the installation cavity 211.
Through the structure in the embodiment, before the inner injection needle is sleeved in the outer injection needle, the push block 550 is inserted into the corresponding runner 513, and in the process of sleeving the inner injection needle in the outer injection needle, the plugging plug 411 can push the baffle ring to drive the push block 550 to extend into the runner 513, at this time, the second inclined plane 551 extrudes the first inclined plane 533 to enable the movable block 530 to move towards the opening of the movable cavity 512, and drives the movable rod 531 to extend out of the movable cavity 512 to enable the fixture blocks 532 to be attached to the inner needle base 110, and due to the symmetrical arrangement of the fixture blocks 532, the fixture blocks 532 on two sides of the inner needle base 110 are close to each other to extrude and fix the inner needle base 110, so that the fixation of the inner injection needle in the outer injection needle is further realized; when the inner injection needle needs to be detached, the inner injection needle is stirred to drive the sealing plug 411 to leave the mounting cavity 211, the spring 540 pushes the movable block 530 to move towards the movable cavity 512 to drive the clamping block 532 to be away from the inner needle seat 110, and therefore the fixation of the inner needle seat 110 is released, and the detachment of the inner injection needle is facilitated.
In this embodiment, the fixing ring 420 is threadedly mounted in the mounting cavity 211, and the fixing ring 420 is preferably detachable from the mounting cavity 211.
In this embodiment, the plugging ring 520 is threadedly mounted in the movable chamber 512, preferably to allow the plugging ring 520 to be removed and installed in the movable chamber 512.
When the compound injection needle capable of detecting whether the compound injection needle is inserted into a blood vessel is used specifically, the inner injection needle is sleeved into the outer injection needle, the inner injection needle is further fixed by the fixing mechanism, the inner injection needle is connected with the injector, the conduit 120 is connected with the negative pressure needle cylinder, the compound injection needle is inserted into the skin, whether blood exists or not is observed from the outer needle seat 100, and when the blood exists, injection of hyaluronic acid by the injector is stopped.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.
Claims (6)
1. A compound syringe needle that can detect whether go into blood vessel, its characterized in that: the injection needle comprises an outer injection needle and an inner injection needle sleeved in the outer injection needle, wherein the outer injection needle comprises an outer needle base (100), a mounting cavity (211) is arranged in the outer needle base (100), an outer puncture needle (101) communicated with the mounting cavity (211) is arranged at the front end of the outer needle base (100), a catheter connector (102) communicated with the mounting cavity (211) is arranged on the side surface of the outer needle base (100), and a catheter (120) is connected to the catheter connector (102); the inner injection needle comprises an inner needle seat (110) extending into the mounting cavity (211), an inner puncture needle (221) sleeved in the outer puncture needle (101) is arranged at the front end of the inner needle seat (110), a gap is formed between the outer puncture needle (101) and the inner puncture needle (221), an opening (311) is formed in the side wall of the outer puncture needle (101) and located at the front end of the side wall, and the front end of the inner puncture needle (221) extends to the opening (311).
2. The compound injection needle capable of detecting whether to enter a blood vessel according to claim 1, wherein: the outer side of the inner needle base (110) is sleeved with a sealing plug (411), and the sealing plug (411) is used for fixing the inner needle base (110) in the mounting cavity (211).
3. The compound injection needle capable of detecting whether to enter a blood vessel according to claim 2, wherein: a fixing mechanism for fixing the inner needle base (110) is arranged in the mounting cavity (211).
4. A composite needle for detecting vascular invasion according to claim 3, wherein: the fixing mechanism comprises a fixing ring (420), a through hole (511) for the inner needle base (110) to pass through is formed in the fixing ring (420), movable cavities (512) communicated with the through hole (511) are symmetrically formed in the fixing ring (420) along the radial direction of the fixing ring (420), and a moving channel (513) communicated with the corresponding movable cavity (512) is formed in the side face, facing the sealing plug (411), of the fixing ring (420) along the axial direction of the fixing ring (420); a plugging ring (520) is arranged at an opening of the movable cavity (512), a movable block (530) is arranged in the movable cavity (512), a movable rod (531) penetrating through the plugging ring (520) and extending into the through hole (511) is arranged on the movable block (530), a spring (540) pushing the movable block (530) to move towards the movable cavity (512) is sleeved on the movable rod (531) positioned in the movable cavity (512), a clamping block (532) matched with the inner needle base (110) is arranged on the movable rod (531) extending into the through hole (511), and a first inclined plane (533) is arranged on the movable block (530); a slidable push block (550) is arranged in the runner (513), a second inclined surface (551) which is matched with the first inclined surface (533) to push the movable rod (531) to extend out of the movable cavity (512) is arranged on the push block (550), and a stop ring matched with the seal plug (411) is arranged between the end parts of the push block (550) in the installation cavity (211).
5. The compound injection needle capable of detecting whether to enter a blood vessel according to claim 4, wherein: the fixing ring (420) is installed in the installation cavity (211) in a threaded mode.
6. The compound injection needle capable of detecting whether to enter a blood vessel according to claim 4, wherein: the plugging ring (520) is installed in the movable cavity (512) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663097.6U CN214807437U (en) | 2021-07-21 | 2021-07-21 | Composite injection needle capable of detecting whether entering blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663097.6U CN214807437U (en) | 2021-07-21 | 2021-07-21 | Composite injection needle capable of detecting whether entering blood vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214807437U true CN214807437U (en) | 2021-11-23 |
Family
ID=78833523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121663097.6U Expired - Fee Related CN214807437U (en) | 2021-07-21 | 2021-07-21 | Composite injection needle capable of detecting whether entering blood vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214807437U (en) |
-
2021
- 2021-07-21 CN CN202121663097.6U patent/CN214807437U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |