CN213850967U - Puncture needle with protective sleeve - Google Patents
Puncture needle with protective sleeve Download PDFInfo
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- CN213850967U CN213850967U CN202022652515.3U CN202022652515U CN213850967U CN 213850967 U CN213850967 U CN 213850967U CN 202022652515 U CN202022652515 U CN 202022652515U CN 213850967 U CN213850967 U CN 213850967U
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- needle
- hole
- puncture needle
- clip
- arm
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Abstract
The utility model relates to a take pjncture needle of protective sheath, it includes: a puncture needle having a needle body and a needle tip; an external trocar comprising a cannula holder having an inner lumen; the clip, the clip is including being equipped with fenestrate supporting component and a pair of elastic arm that extends the setting from the supporting component along the needle point direction, the elastic arm cross arrangement to form the via hole that can supply the needle point to pass at the intersection, the front end of elastic arm extends and forms the arm lock, and two arm lock front end contacts the setting, two arm lock front ends. The clamp arranged in the outer trocar is utilized, when the puncture needle penetrates through the clamp, the clamp is clamped with the sleeve seat, when the puncture needle exits from the through hole, the clamping arm is closed due to the fact that the stress of the elastic arm is relieved when the puncture needle exits from the through hole, the limiting fit with the sleeve seat is relieved, the sleeve seat can leave along with the puncture needle, the needle point is protected, and the phenomenon that the needle point is scratched or stabbed is avoided.
Description
Technical Field
The utility model relates to the technical field of medical treatment, concretely relates to take pjncture needle of protective sheath.
Background
The puncture needle needs to be inserted into a patient by matching with an outer cannula needle until the tail end of the outer cannula needle is properly arranged on the blood vessel shaft of the patient, and then the puncture needle needs to be withdrawn, but because the needle head of the puncture needle is long, the exposed needle point of the puncture needle can form risks such as accidental puncture or scratch and the like when the puncture needle is withdrawn, and damage or diseases caused by blood-borne pathogens are caused, so that a device which can shield the needle point when the puncture needle is withdrawn is needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model aims to provide a puncture needle with a protective sleeve.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a puncture needle with a protective sheath, comprising:
a puncture needle having a needle body and a needle tip;
the outer trocar is sleeved on the outer side of the puncture needle and comprises a cannula seat with an inner cavity;
a clip arranged in the inner cavity of the inner cavity,
the clip comprises a supporting part provided with a through hole and a pair of elastic arms extending from the supporting part along the needle point direction, the elastic arms are arranged in a crossed manner, a through hole for the needle point to pass through is formed at the crossed position, the front ends of the elastic arms extend to form clamping arms, the two clamping arms are arranged oppositely, the front ends of the two clamping arms are arranged in a contact manner, the clamping arms have a first state of opening when the needle point passes through the through hole and a second state of closing when the needle point retreats back to the through hole,
and the clip is embedded in the inner cavity of the cannula seat when the clip is in the first state, and can exit from the cannula seat along with the puncture needle when the clip is in the second state.
The inner wall circumference of the inner cavity is provided with a bulge, and a joint of the elastic arm and the clamping arm forms a limiting part which can form limiting matching with the bulge when the clamping arm is in a first state.
An extension part is arranged between the elastic arm and the supporting part and is parallel to the needle body.
The elastic arm is L-shaped, one side of the joint of the clamping arm and the needle body is provided with an arc-shaped groove, and the two oppositely arranged arc-shaped grooves are closed to form a via hole.
The diameter of the through hole is smaller than that of the pin body.
The needle body bottom is equipped with the needle file, the junction of needle file and needle body is equipped with spacing boss, the bottom of casing pipe seat is equipped with the recess with spacing boss looks adaptation.
The groove is communicated with the inner cavity.
The utility model has the advantages that: the clamp arranged in the outer trocar is utilized, when the puncture needle penetrates through the clamp, the clamp is clamped with the sleeve seat, when the puncture needle exits from the through hole, the clamping arm is closed due to the fact that the stress of the elastic arm is relieved when the puncture needle exits from the through hole, the limiting fit with the sleeve seat is relieved, the sleeve seat can leave along with the puncture needle, the needle point is protected, and the phenomenon that the needle point is scratched or stabbed is avoided.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention (first state).
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is a schematic view of the needle and clip assembly shown at a in fig. 1.
Fig. 4 is a schematic cross-sectional view of the present invention (second state).
Fig. 5 is a schematic view of the needle and clip assembly of fig. 4 at B.
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 efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in the figure, the utility model provides a take pjncture needle of protective sheath, it includes:
a puncture needle 1 having a needle body 12 and a needle tip 13;
the outer trocar 2 is sleeved outside the puncture needle and comprises a cannula seat with an inner cavity 21;
a clip 3 disposed within the internal cavity and,
the clip is including being equipped with fenestrate supporting component and a pair of elastic arm 33 that extends the setting from supporting component 31 along the needle point direction, the elastic arm cross arrangement to form the via hole that can supply the needle point to pass at the intersection, the front end of elastic arm extends and forms arm lock 34, and two arm lock front end contact sets up, two arm lock front end contact, the arm lock has the first state of opening when the needle point passes the via hole and returns closed second state when the needle point returns the via hole.
And the clip is embedded in the inner cavity 21 of the cannula holder when the clip is in the first state, and can be withdrawn from the cannula holder along with the puncture needle when the clip is in the second state, namely, when the puncture needle passes through the through hole and jacks up the two clamping arms, the clamping arms are forced to be outwards opened so as to form limit fit with the bulges arranged in the embedded part, when the puncture needle needs to be withdrawn and the puncture needle is withdrawn from the through hole, the stress of the clamping arm disappears, it can be closed in opposite directions, thereby releasing the limit of the cannula seat, and the puncture needle can be withdrawn continuously at the moment and the clamp can be driven to move together, wherein the supporting part can be contracted and arranged at the outer side of the needle body, that is, the puncture needle can penetrate the support component, but a certain damping feeling is provided between the puncture needle and the puncture hole, when the limit between the clamp and the cannula seat is released, the puncture needle can take the clip to move out, and simultaneously two clamping arms of the clip are closed to cover the needle point at the inner side of the clip.
The inner wall circumference of the inner cavity is provided with a bulge 211, and a limiting part 341 which can form limiting fit with the bulge when the clamping arm is in a first state is formed at the joint of the elastic arm and the clamping arm.
An extension part 32 is arranged between the elastic arm and the support part, the extension part is parallel to the needle body, the elasticity of the elastic arm is ensured, and the elastic arm can form limit fit with the cannula seat when the elastic arm is stretched by the needle body.
The elastic arm is L-shaped, an arc-shaped groove 331 is formed in one side, close to the needle body, of the joint of the clamping arm, and the two oppositely-arranged arc-shaped grooves are closed to form a through hole.
The diameter of via hole is less than the diameter of needle body, more does benefit to the needle body and can provide the power that the elastic arm moved to both sides when passing, guarantees that the clearance between the front end arm lock is opened for the pjncture needle can normally pass, and when the pjncture needle withdrawal, thereby this arm lock is closed with the needle point cladding of pjncture needle between two arm locks.
The needle body bottom is equipped with needle file 11, the junction of needle file and needle body is equipped with spacing boss 111, the bottom of casing pipe seat is equipped with the recess 22 with spacing boss looks adaptation. When the device is used, the limiting boss is matched with the bottom of the cannula base, and the clip is limited in the inner cavity by the limiting boss.
The groove 22 is communicated with the inner cavity, the limiting boss is trapezoidal, the clamp can conveniently exit from the groove, and when the limiting boss is used, the limiting boss can better enter the sleeve seat and is matched with the sleeve seat.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.
Claims (7)
1. A puncture needle with a protective sleeve is characterized in that: it includes:
a puncture needle having a needle body and a needle tip;
the outer trocar is sleeved on the outer side of the puncture needle and comprises a cannula seat with an inner cavity;
a clip arranged in the inner cavity of the inner cavity,
the clip comprises a supporting part provided with a through hole and a pair of elastic arms extending from the supporting part along the needle point direction, the elastic arms are arranged in a crossed manner, a through hole for the needle point to pass through is formed at the crossed position, the front ends of the elastic arms extend to form clamping arms, the two clamping arms are arranged oppositely, the front ends of the two clamping arms are arranged in a contact manner, the clamping arms have a first state of opening when the needle point passes through the through hole and a second state of closing when the needle point retreats back to the through hole,
and the clip is embedded in the inner cavity of the cannula seat when the clip is in the first state, and can exit from the cannula seat along with the puncture needle when the clip is in the second state.
2. A lancet with a protective sheath according to claim 1, wherein: the inner wall circumference of the inner cavity is provided with a bulge, and a joint of the elastic arm and the clamping arm forms a limiting part which can form limiting matching with the bulge when the clamping arm is in a first state.
3. A lancet with a protective sheath according to claim 1, wherein: an extension part is arranged between the elastic arm and the supporting part and is parallel to the needle body.
4. A lancet with a protective sheath according to claim 1 or 3, wherein: the elastic arm is L-shaped, one side of the joint of the clamping arm and the needle body is provided with an arc-shaped groove, and the two oppositely arranged arc-shaped grooves are closed to form a via hole.
5. A sheathed needle according to claim 4, characterized in that: the diameter of the through hole is smaller than that of the pin body.
6. A lancet with a protective sheath according to claim 1, wherein: the needle body bottom is equipped with the needle file, the junction of needle file and needle body is equipped with spacing boss, the bottom of casing pipe seat is equipped with the recess with spacing boss looks adaptation.
7. A sheathed needle according to claim 6, characterized in that: the groove is communicated with the inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022652515.3U CN213850967U (en) | 2020-11-17 | 2020-11-17 | Puncture needle with protective sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022652515.3U CN213850967U (en) | 2020-11-17 | 2020-11-17 | Puncture needle with protective sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213850967U true CN213850967U (en) | 2021-08-03 |
Family
ID=77056492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022652515.3U Active CN213850967U (en) | 2020-11-17 | 2020-11-17 | Puncture needle with protective sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213850967U (en) |
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2020
- 2020-11-17 CN CN202022652515.3U patent/CN213850967U/en active Active
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