CN215018617U - Quick shutoff type pjncture needle - Google Patents
Quick shutoff type pjncture needle Download PDFInfo
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- CN215018617U CN215018617U CN202120433964.0U CN202120433964U CN215018617U CN 215018617 U CN215018617 U CN 215018617U CN 202120433964 U CN202120433964 U CN 202120433964U CN 215018617 U CN215018617 U CN 215018617U
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Abstract
The utility model relates to the field of medical equipment, concretely relates to quick shutoff type pjncture needle. The needle sheath is tubular, a through hole is formed in the needle sheath, and one end of the needle sheath is closed; the needle core is tubular and is positioned in the needle sheath, and the needle core is connected with the needle sheath in a sliding way and is used for sealing the through hole. The utility model provides a quick shutoff type pjncture needle can the simplified operation and reduce the amount of bleeding.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to quick shutoff type pjncture needle.
Background
A puncture needle is a medical device used for puncturing organs, tissues and for injection. The current puncture needle generally comprises a needle sheath and a needle core, wherein the needle sheath is tubular, the needle core is positioned in the needle sheath and can slide relative to the needle sheath, and the surface of the needle core is attached to the inner wall of the needle sheath to seal the needle sheath; when the puncture needle is inserted or the blood is required to be observed whether to return or not in the using process, the needle core is required to be completely pulled out during observation, and the blood can flow out through the needle sheath. However, the length of the puncture needle is large, the lengths of the needle sheath and the needle core are large, when the needle core is completely pulled out, the moving length of the needle core is long, the diameters of the needle core and the needle sheath are small, the difficulty of inserting the end part of the needle core into the needle sheath after the needle core is completely pulled out is large, the needle core can be inserted again after 1-2 s, and the bleeding amount is increased undoubtedly.
Secondly, when the medicine is injected into the body, the needle core needs to be completely pulled out firstly, the injector with the medicine stored in can be connected with the needle sheath, then the medicine is injected into the body through the needle sheath, but after the needle sheath is inserted into organs and tissues, blood can flow out of the needle sheath after the needle core is pulled out, so that medical personnel can rapidly plug the needle sheath by using fingers after the needle core is completely pulled out, and the injector with the medicine is rapidly connected with the needle sheath after the injector is close to the needle sheath. Because the diameter of the needle sheath and the needle core is limited, the syringe can be connected with the needle sheath in a certain time, the bleeding volume can be increased undoubtedly, and in addition, when the injection is carried out, the operations of completely pulling out the needle core, completely inserting the needle core again, quickly plugging the needle sheath and then quickly connecting the syringe and the like are required after pulling out the needle core, so that the operation is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a quick shutoff type pjncture needle to simplified operation reduces the amount of bleeding.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a rapid plugging type puncture needle comprises a needle sheath and a needle core, wherein the needle sheath is tubular, a through hole is formed in the needle sheath, and one end of the needle sheath is closed; the needle core is tubular and is positioned in the needle sheath, and the needle core is connected with the needle sheath in a sliding way and is used for sealing the through hole.
The beneficial effect of this scheme does:
the stylet in the scheme can seal the through hole when being positioned in the needle sheath, and blood can not enter the needle sheath after the needle sheath pierces an organ or a tissue, so that the blood can not flow out of the needle sheath. When the condition of blood return needs to be checked, the needle core can be pulled outwards of the needle sheath to enable the needle core not to close the through hole, blood can enter the needle sheath and flow out of the tubular needle core at the moment, the needle core does not need to be completely pulled out, the needle core is directly pushed out of the needle sheath after checking, the through hole can be quickly closed again, the needle core is compared with a traditional puncture needle which needs to be completely pulled out, the needle core does not need to be aligned with the needle sheath again when sliding into the needle core, the closing speed is improved, and the blood output is reduced.
When injection is needed, the injector is connected with the needle core, and the needle core can seal the through hole in the connecting process, so that bleeding can be avoided; then the needle core slides out of the needle sheath to the position where the through hole is not closed any more, the needle core can be communicated with the needle sheath, after the medicine is injected into the needle core, the medicine firstly enters the needle sheath and then enters a human body through the through hole, and medical staff is not needed to block the end part of the needle sheath in advance, so that the operation is effectively simplified, and the bleeding amount is further reduced.
Further, the through holes are strip-shaped holes.
The beneficial effect of this scheme does: compare with the round hole, under the same condition of width and round hole's diameter, the length in bar hole is bigger, and the graininess or the bulk that can supply blood coagulation to form pass through, avoid the through-hole to be blockked up.
Further, the length of the through hole is 1-3 mm.
The beneficial effect of this scheme does: the length of the through holes is enough for granular or blocky substances with larger grain diameters to pass through, so that the through holes are further prevented from being blocked.
Further, the through hole is located at the closed end of the needle sheath.
The beneficial effect of this scheme does: the closed end of the needle sheath firstly penetrates into the organ or the tissue, the through hole in the scheme can firstly enter the organ or the tissue along with the closed end of the needle sheath, and the through hole can be ensured to enter the organ or the tissue under the condition of smaller puncture depth.
Further, the length between the end part of the through hole far away from the closed end of the needle sheath and the end part of the closed end of the needle sheath is less than or equal to 5 mm.
The beneficial effect of this scheme does: a certain gap is still reserved between the through hole and the end part of the needle sheath, so that the end part of the needle core can slide between the through hole and the end part of the needle sheath to seal the through hole.
Furthermore, the end parts of the needle sheath and the needle core, which are far away from the closed end of the needle sheath, are respectively fixed with a first handle and a second handle, the first handle and the second handle are both provided with a connecting channel, the connecting channel in the first handle is communicated with the needle sheath, and the connecting channel in the second handle is communicated with the needle core.
The beneficial effect of this scheme does: the first handle and the second handle can be used for conveniently moving the needle sheath and the needle core.
Further, the diameter of the connecting channel on the second handle is larger than the outer diameter of the needle core.
The beneficial effect of this scheme does: when the syringe is connected with the second handle, the head part of the syringe connected with the needle head can be more conveniently connected with the connecting channel under the condition that the needle head on the syringe is detached, and the needle head of the syringe can be prevented from accidentally stabbing medical staff.
Furthermore, the first handle and the second handle respectively comprise a first limiting part, a second limiting part and a limiting plate which are sequentially distributed along the axial direction, the needle core and the needle sheath are respectively fixed with one ends of the two limiting parts, which are far away from the second limiting part, and the connecting channel is positioned in the first limiting part and penetrates through the second limiting part and the limiting plate; the first limiting part and the limiting plate are rectangular in cross section along the radial direction, and the second limiting part is cylindrical.
The beneficial effect of this scheme does: the second limiting part is positioned between the first limiting part and the limiting plate, and the cross sections of the first limiting part, the second limiting part and the limiting plate are different in shape, so that the surfaces of the first handle and the second handle are not smooth side surfaces, and the phenomenon that the needle core or the needle sheath falls off due to relative sliding between the first handle and the second handle and fingers of medical staff can be avoided.
Furthermore, the diameter of the second limiting part is smaller than or equal to the side length of the first limiting part.
The beneficial effect of this scheme does: the diameter of the second limiting part is smaller, so that bulges can be formed between the second limiting part and the first limiting part and between the second limiting part and the limiting plate, and the slippage can be further avoided.
Furthermore, an elastic ring is fixed in the connecting channel in the second handle.
The beneficial effect of this scheme does: after the head of the syringe is inserted into the connecting channel, the elastic ring can be elastically deformed, the friction force applied to the head of the syringe is increased, and the syringe is prevented from falling off from the connecting channel in the second handle, so that the medicine leakage and the blood flowing out from the needle core are avoided.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;
FIG. 2 is an elevational vertical cross-sectional view of FIG. 1;
fig. 3 is a front vertical sectional view of a first handle and a second handle according to embodiment 2 of the present invention;
fig. 4 is a schematic perspective view of a second handle according to embodiment 3 of the present invention;
fig. 5 is a partial schematic view of a first handle and a second handle according to embodiment 4 of the present invention;
fig. 6 is a perspective view of a second handle according to embodiment 5 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the needle sheath comprises a needle sheath 1, a through hole 11, a guide groove 12, a first handle 2, a needle core 3, a second handle 4, a connecting channel 41, a first limiting part 42, a second limiting part 43, a limiting plate 44, a connecting part 45 and an elastic ring 46.
Example 1
A rapid blocking puncture needle comprises a needle sheath 1 and a needle core 3, wherein a first handle 2 and a second handle 4 are respectively and integrally formed at the left ends of the needle sheath 1 and the needle core 3, and the needle sheath 1 in the embodiment is tubular. The right end of the needle sheath 1 is a tip, and the right end of the needle sheath 1 is closed, so that a diversion trench 12 with an opening facing to the left is formed in the needle sheath 1. The right-hand member of sheath 1 is equipped with through-hole 11, and through-hole 11 is the bar hole, and the length in bar hole is 1 ~ 3mm, and the distance less than or equal to 5mm between the tip of through-hole 11 left end and 1 right-hand member of sheath, and is specific, and the distance between the tip of through- hole 11 and 1 right-hand member of sheath in this embodiment is 2mm, and the distance between the tip of through-hole 11 left end and 1 right-hand member of sheath is 5 mm.
All be equipped with connecting channel 41 in first handle 2 and the second handle 4, connecting channel 41 and the needle sheath 1 intercommunication in the first handle 2, the right-hand member of nook closing member 3 runs through connecting channel 41 from a left side to the right side and extends into in the needle sheath 1 and can slide for needle sheath 1, the outer wall of nook closing member 3 offsets with the inner wall of needle sheath 1, seals needle sheath 1, and is concrete, the right-hand member of nook closing member 3 is located the right side of through-hole 11 for the right-hand member of needle sheath 1 can seal through-hole 11. The needle core 3 in this embodiment is tubular and the connecting channel 41 in the second handle 4 communicates with the needle core 3.
The specific implementation process is as follows:
initially, the stylet 3 is positioned inside the needle sheath 1, and the right end of the stylet 3 is positioned at the right side of the through hole 11, so as to seal the through hole 11. When the puncture needle is punctured into an organ or tissue, the right end of the needle sheath 1 and the through hole 11 are positioned in the organ or tissue, when the condition of blood return needs to be checked, the needle core 3 is manually slid leftwards relative to the needle sheath 1 through the second handle 4, when the right end of the needle core 3 slides to the left side of the through hole 11, the through hole 11 is not closed any more, blood enters the needle sheath 1 from the through hole 11, and then can flow out from the needle core 3 from the left end of the connecting channel 41 of the second handle 4, and the needle core 3 does not need to be completely pulled out.
After the observation, slide nook closing member 3 fast right side that can make nook closing member 3 slide to through-hole 11, nook closing member 3 can seal through-hole 11 again this moment, and the internal blood of patient can't follow through-hole 11 and get into in the needle sheath 1, also can not flow outside, so can reduce patient's bleeding volume.
When it is desired to inject a medicament into a patient, with the hub 3 closing the through-bore 11, the hub 3 is pulled to the left relative to the sheath 1 after the needle of the syringe has been manually inserted into the connecting channel 41 in the second handle 4 until the hub 3 no longer closes the through-bore 11. After the medicine in the injector is pushed into the needle core 3, the medicine can flow into the needle sheath 1 through the needle core 3 and then enter the human body from the through hole 11, and the needle core 3 does not need to be completely pulled out, so that the blood in the patient body can not flow out of the needle sheath 1 before the injector is connected with the needle core 3, and medical staff does not need to seal the needle sheath 1 first, thereby simplifying the operation.
After the injection, earlier artifical with nook closing member 3 for the sheath 1 promotes to the right, until the right-hand member of nook closing member 3 slides to the right side of through-hole 11, nook closing member 3 can seal through-hole 11 once more this moment, takes off the syringe after, can avoid patient's blood to flow from sheath 1 equally, reduces patient's hemorrhage volume.
Example 2
As shown in FIG. 3, in the present embodiment, the diameter of the connecting passage 41 of the second handle 4 is larger than the outer diameter of the core needle 3 in the embodiment 1. The diameter of the connecting channel 41 on the second handle 4 in the embodiment is larger, and the connecting channel can be connected with the head of the injector when being connected with the injector, namely the injector can be connected with the connecting channel 41 on the second handle 4 without installing a needle when being used, so that the condition that the medical staff is punctured by the needle due to careless operation during injection is avoided. Otherwise, the other operations in the present embodiment are the same as those in embodiment 1.
Example 3
As shown in fig. 4, on the basis of embodiment 2, the first handle 2 and the second handle 4 in this embodiment each include a first limiting portion 42, a second limiting portion 43, and a limiting plate 44 that are sequentially distributed from right to left, the connection between the first handle 2 and the stylet 1 and the connection between the second handle 4 and the stylet 3 are the same, and the connection between the first handle 2 and the stylet 1, the connection between the second handle 4 and the stylet 3, and the structures of the first handle 2 and the second handle 4 are described in this embodiment by taking the second handle 4 and the stylet 3 as an example.
The first position-limiting portion 42, the second position-limiting portion 43 and the position-limiting plate 44 are integrally formed, and the connecting channel 41 is located in the first position-limiting portion 42 and penetrates through the second position-limiting portion 43 and the position-limiting plate 44. The stylet 3 is located at the right side of the first position-limiting part 42 and is integrally formed with the right end of the first position-limiting part 42, the first position-limiting part 42 and the position-limiting part 44 in the embodiment are square in cross section along the radial direction, the second position-limiting part 43 is cylindrical, and the diameter of the second position-limiting part 43 is equal to the side length of the first position-limiting part 42.
In the use of the puncture needle in the embodiment, when the fingers of the medical staff are in contact with the first handle 2 and the second handle 4, the fingers can be prevented from slipping, and the operations such as puncture, injection and the like can be more conveniently carried out.
Example 4
As shown in fig. 5, in addition to embodiment 3, a connecting portion 45 is integrally formed at the right end of the first stopper portion 42 of the second handle 4 in this embodiment, the diameter of the connecting portion 45 is larger than the outer diameter of the stylet 3, the connecting portion 45 is fixed to the stylet 3, and specifically, the connecting portion 45 in this embodiment is integrally formed with the stylet 3. The connecting portion 45 is located in the connecting channel 41 on the first handle 2, and the right end of the connecting portion 45 is threadedly connected with the connecting channel 41 on the first handle 2. After the needle core 3 slides rightwards, the connecting part 45 is connected with the connecting channel 41 on the first handle 2, so that the phenomenon that the needle core 3 slides leftwards to cause the blood to overflow through the through hole 11 when the needle core is subjected to large vibration can be avoided, and the bleeding amount is further reduced.
Example 5
As shown in FIG. 6, on the basis of embodiment 4, an elastic ring 46 is glued in the connecting channel 41 of the second handle 4 in this embodiment, and after the head of the syringe is inserted into the connecting channel 41 of the second handle 4, the elastic ring 46 can increase the friction force on the head of the syringe, so as to prevent the syringe from separating from the second handle 4, which results in drug leakage.
The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The utility model provides a quick shutoff type pjncture needle, includes sheath and nook closing member, the sheath is tubulose, its characterized in that: the needle sheath is provided with a through hole, and one end of the needle sheath is closed; the needle core is tubular and is positioned in the needle sheath, and the needle core is connected with the needle sheath in a sliding mode and is used for sealing the through hole.
2. The rapid occlusion type puncture needle according to claim 1, wherein: the through holes are strip-shaped holes.
3. A rapid occlusion-type puncture needle according to claim 2, wherein: the length of the through hole is 1-3 mm.
4. A rapid occlusion-type puncture needle according to claim 2, wherein: the through hole is positioned at the closed end of the needle sheath.
5. The rapid occlusion type puncture needle according to claim 4, wherein: the length between the end part of the through hole far away from the closed end of the needle sheath and the end part of the closed end of the needle sheath is less than or equal to 5 mm.
6. The rapid occlusion type puncture needle according to claim 1, wherein: the end parts of the needle sheath and the needle core, which are far away from the closed end of the needle sheath, are respectively fixed with a first handle and a second handle, the first handle and the second handle are both provided with a connecting channel, the connecting channel in the first handle is communicated with the needle sheath, and the connecting channel in the second handle is communicated with the needle core.
7. The rapid occlusion type puncture needle according to claim 6, wherein: the diameter of the connecting channel on the second handle is larger than the outer diameter of the needle core.
8. The rapid occlusion needle of claim 7, wherein: the first handle and the second handle respectively comprise a first limiting part, a second limiting part and a limiting plate which are sequentially distributed along the axial direction, the needle core and the needle sheath are respectively fixed with one ends of the two limiting parts, which are far away from the second limiting part, and the connecting channel is positioned in the first limiting part and penetrates through the second limiting part and the limiting plate; the first limiting part and the limiting plate are rectangular in cross section along the radial direction, and the second limiting part is cylindrical.
9. A rapid occlusion needle, as in claim 8, wherein: the diameter of the second limiting part is smaller than or equal to the side length of the first limiting part.
10. A rapid occlusion needle, as in claim 9, wherein: an elastic ring is fixed in the connecting channel in the second handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120433964.0U CN215018617U (en) | 2021-02-26 | 2021-02-26 | Quick shutoff type pjncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120433964.0U CN215018617U (en) | 2021-02-26 | 2021-02-26 | Quick shutoff type pjncture needle |
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| Publication Number | Publication Date |
|---|---|
| CN215018617U true CN215018617U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120433964.0U Active CN215018617U (en) | 2021-02-26 | 2021-02-26 | Quick shutoff type pjncture needle |
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| CN (1) | CN215018617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245381A (en) * | 2022-09-26 | 2022-10-28 | 博志生物科技(深圳)有限公司 | Puncture injection device |
-
2021
- 2021-02-26 CN CN202120433964.0U patent/CN215018617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245381A (en) * | 2022-09-26 | 2022-10-28 | 博志生物科技(深圳)有限公司 | Puncture injection device |
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