CN215739315U - Combined spinal-epidural anesthesia puncture needle - Google Patents
Combined spinal-epidural anesthesia puncture needle Download PDFInfo
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- CN215739315U CN215739315U CN202120579841.8U CN202120579841U CN215739315U CN 215739315 U CN215739315 U CN 215739315U CN 202120579841 U CN202120579841 U CN 202120579841U CN 215739315 U CN215739315 U CN 215739315U
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- epidural anesthesia
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Abstract
The utility model discloses a combined spinal-epidural anesthesia puncture needle, which comprises an outer needle, an inner needle and a needle core, wherein the outer needle comprises a first needle body and a first needle seat, the inner needle comprises a second needle body and a second needle seat, the needle core comprises a third needle body and a third needle seat, one end of the first needle seat is provided with an internal thread, the periphery of the end is provided with an annular push plate, the other end of the first needle seat is connected with the first needle body, the two opposite sides of the first needle seat are respectively provided with a handheld wing, the first needle body is a hollow needle tube, the needle point of the first needle body is in an inclined knife shape, the second needle seat consists of an inlet section and an outlet section, the outer diameter of the inlet section is larger than that of the outlet section, and the outlet section is a threaded section connected with the second needle body; the third needle seat consists of a handle and an inserting end. Can accurately inject anesthetic and is convenient to operate.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a combined spinal-epidural anesthesia puncture needle.
Background
Lumbar puncture is clinically important and is punctured into the subarachnoid space with a lumbar puncture needle. The puncture point is generally selected in the gap between the waist 3 and the waist 4, and can be moved up or down by 1 gap. Different individuals have different requirements on the depth of the lumbar combined anesthesia puncture needle entering a human body, but the lumbar combined anesthesia puncture needle used at present cannot be positioned without a positioning structure, and the depth of the lumbar puncture needle entering the human body is easy to shift in the process of implementing anesthesia, so that an anesthesia doctor needs to hold the lumbar combined anesthesia puncture needle with hands, certain trouble is brought to use, and the treatment effect is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a combined spinal-epidural anesthesia puncture needle which can accurately inject anesthetic and is convenient to operate.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a combined spinal-epidural anesthesia puncture needle comprises an outer needle, an inner needle and a needle core, wherein the outer needle comprises a first needle body and a first needle seat, the inner needle comprises a second needle body and a second needle seat, the needle core comprises a third needle body and a third needle seat, one end of the first needle seat is provided with an internal thread, an annular push plate is arranged on the periphery of the end, the other end of the first needle seat is connected with the first needle body, the two opposite sides of the first needle body are respectively provided with a handheld wing, the first needle body is a hollow needle tube, the needle point of the first needle body is in an inclined knife shape, the second needle seat consists of an inlet section and an outlet section, the outer diameter of the inlet section is larger than that of the outlet section, the outlet section is a threaded section connected with the second needle body, and the outer surface of the inlet section is provided with an external thread matched with the internal thread; the third needle seat consists of a handle and an insertion end, the outer diameter of the handle is larger than that of the insertion end, the insertion end consists of a cylinder body section and a conical section connected with the cylinder body section, the tip of the conical section is connected with the third needle body, and the inner cavity of the inlet section of the second needle seat is just matched with the shape of the insertion end of the third needle seat; the second needle body is a hollow needle, a liquid outlet hole is formed in the needle point of the second needle body, and the third needle body is a solid needle.
According to the utility model, the inner wall of the inlet section of the second needle seat is provided with an axial positioning groove, one end of the positioning groove is positioned at the end part of the second needle seat, the other end of the positioning groove is connected with a vertical clamping groove, the third needle seat is provided with a corresponding positioning block, and when the positioning block slides down to the clamping groove along the positioning groove, the insertion end of the third needle seat just completely enters the second needle seat.
The liquid outlet hole of the second needle body is positioned on one side of the top end of the needle point.
Preferably, the needle point of the third needle body is just matched with the needle point inner cavity of the second needle body.
The length from the bottom of the threaded section of the second needle seat to the second needle point is 0.5cm longer than the total length of the outer needle.
The utility model has the beneficial effects that:
1. according to the utility model, the push plate is arranged at one end of the first needle seat, the handheld wing is arranged at the other end of the first needle seat, and a needle body is not needed to be held by hands, so that the positioning puncture is convenient; the needle point of the first needle body is in a bevel knife shape, so that the first needle body can penetrate into the skin more labor-saving; the first needle body and the second needle body are in threaded fit, so that the micro-adjustment of the penetration depth is realized; the third needle seat consists of a handle and an insertion end, the insertion end consists of a cylinder body section and a conical section connected with the cylinder body section, the conical structure enables the third needle body to have better stability after being inserted, and the cylinder body section can be connected with an interface of the syringe after an inner core is conveniently pulled out;
2. the inner wall of the inlet section of the second needle seat is provided with an axial positioning groove and a clamping groove, the third needle seat is provided with a corresponding positioning block, when the positioning block slides down to the clamping groove along the positioning groove, the insertion end of the third needle seat just completely enters the second needle seat, and the integration is more stable after the inner needle and the inner core are combined.
3. The liquid outlet hole of the second needle body is arranged on one side of the top end of the needle point, so that anesthetic can be more accurately injected into a target position, and the needle point of the third needle body is just matched with the needle point inner cavity of the second needle body, so that the liquid outlet hole of the second needle body can be well sealed.
4. The length of threaded section bottom to the second needle point of second needle file is established to be longer 0.5cm than the total length of outer needle, and before the threaded section of second needle file and first needle file did not contact, the skin had been penetrated along first needle to the second needle body, pierces more laborsavingly, only realizes the fine adjustment of degree of depth through rotatory screw thread.
Drawings
FIG. 1 is a schematic structural view of a combined spinal-epidural anesthesia puncture needle according to the utility model;
FIG. 2 is an exploded view of the combined spinal and epidural anesthesia puncture needle of the utility model;
fig. 3 is a schematic view of the structure of the inner needle and the inner core of example 2.
Fig. 4 is a schematic needle tip portion view of the second needle body and the third needle body of example 3.
Fig. 5 is a partial schematic view of the inner wall of the second needle holder of embodiment 2.
Reference numerals: 1. an outer needle; 2. an inner needle; 3. an inner core; 4. pushing the plate; 5. a hand-held wing; 11. a first needle body; 12. a first needle seat; 21. A first needle body; 22. a second needle seat; 31. a third needle body; 32. a third needle seat; 121. an internal thread; 211. a liquid outlet hole; 221. an inlet section; 222. an outlet section; 321. a handle; 322. a column section; 323. a tapered section; 324. positioning blocks; 2211. positioning a groove; 2212. a card slot; 2221. and (4) external threads.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, a combined spinal and epidural anesthesia puncture needle comprises an outer needle 1, an inner needle 2 and a needle core 3, the outer needle 1 comprises a first needle body 11 and a first needle seat 12, the inner needle 2 comprises a second needle body 21 and a second needle seat 22, the needle core 3 comprises a third needle body 31 and a third needle seat 32, one end of the first needle seat 12 is provided with an internal thread 121, and the periphery of the end is provided with an annular push plate 4, the other end is connected with the first needle body 11, and the two opposite sides are respectively provided with a handheld wing 5, the first needle body 11 is a hollow needle tube, the needle point of the first needle body 11 is in a bevel knife shape, the second needle seat 22 is composed of an inlet section 221 and an outlet section 222, the outer diameter of the inlet section 221 is larger than that of the outlet section 222, the outlet section 222 is a threaded section connected to the second needle body 21, and an external thread 2221 matched with the internal thread 121 is arranged on the outer surface of the outlet section; the third needle holder 32 consists of a handle 321 and an insertion end 322, the outer diameter of the handle 321 is larger than that of the insertion end, the insertion end consists of a cylindrical body section 322 and a conical section 323 connected with the cylindrical body section 322, the tip of the conical section 323 is connected with the third needle body 31, and the inner cavity of the inlet section 221 of the second needle holder 22 is just matched with the shape of the insertion end of the third needle holder 32; the second needle body 21 is a hollow needle, the needle tip of the second needle body is provided with a liquid outlet hole 211, and the third needle body 31 is a solid needle.
When the disposable puncture needle is used, the index finger and the middle finger abut against the handheld wing 5 of the outer needle, the thumb pushes the push plate 4 of the first needle seat 12 to puncture the first needle body 11 into a puncture point, then the inner needle and the inner core are combined, the second needle body 21 is inserted into the first needle body 22 along the first needle seat 12, the second needle body 21 firstly punctures the skin and then continues to be pushed to the deep position by rotating the second needle seat 22, fine adjustment of the puncture depth is realized through thread fit until the puncture target position is reached, the handle 321 of the third needle seat 32 is held by the hand to pull out the inner core 3, and cerebrospinal fluid flows out from the needle point to the inlet section 221 of the second needle seat 22 along the second needle body 21; the injector is inserted into the inlet section 221 of the second needle holder 22, the anesthetic is injected into the anesthetic site, and after the injection is completed, the outer needle 1 is pulled out, thereby completing the injection.
Example 2
This example is based on example 1:
as shown in fig. 3 and 5, an axial positioning groove 2211 is disposed on an inner wall of the inlet section 221 of the second needle holder 22, one end of the positioning groove 2211 is located at an end of the second needle holder 22, the other end of the positioning groove 2211 is connected to a vertical clamping groove 2212, a corresponding positioning block 324 is disposed on the third needle holder 32, and when the positioning block 324 slides down along the positioning groove 2211 to the clamping groove 2212, an insertion end of the third needle holder 32 just completely enters the second needle holder 22.
The inner needle 2 and the inner core 3 are combined, the third needle body 31 is firstly inserted into the second needle seat 22, the positioning block 324 is aligned with the positioning slot 2211, the positioning block 324 slides downwards along the positioning slot 2211 to the bottom, the third needle seat 32 is rotated, the positioning block 324 enters the clamping slot 2212, the third needle body 31 cannot slide outwards, and the handle 321 is conveniently held to push the integrated inner needle 2 and the inner core 3 into the outer needle 1; when the plunger 3 is pulled out, the third needle holder 32 is rotated in the reverse direction, and the positioning block 324 returns to the positioning groove 324, and the plunger 3 is pulled out.
Example 3
This example is based on example 1:
as shown in fig. 4, the liquid outlet 211 of the second needle body 21 is located at one side of the tip end of the needle tip.
The needle point of the third needle body 31 is just matched with the needle point inner cavity of the second needle body 21.
Example 4
This example is based on example 1:
the length from the bottom of the threaded section of the second needle seat 22 to the second needle point 21 is 0.5cm longer than the total length of the outer needle 1.
The connection not mentioned in the present invention is bonding and integral molding.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. A combined spinal-epidural anesthesia puncture needle is characterized in that: the needle comprises an outer needle, an inner needle and a needle core, wherein the outer needle comprises a first needle body and a first needle seat, the inner needle comprises a second needle body and a second needle seat, the needle core comprises a third needle body and a third needle seat, an internal thread is arranged at one end of the first needle seat, an annular push plate is arranged on the periphery of the end, the other end of the first needle seat is connected with the first needle body, and handheld wings are respectively arranged on two opposite sides of the first needle body; the third needle seat consists of a handle and an insertion end, the outer diameter of the handle is larger than that of the insertion end, the insertion end consists of a cylinder body section and a conical section connected with the cylinder body section, the tip of the conical section is connected with the third needle body, and the inner cavity of the inlet section of the second needle seat is just matched with the shape of the insertion end of the third needle seat; the second needle body is a hollow needle, a liquid outlet hole is formed in the needle point of the second needle body, and the third needle body is a solid needle.
2. The combined spinal and epidural anesthesia puncture needle according to claim 1, wherein: the entry inner wall of second needle file is equipped with axial constant head tank, the one end of constant head tank is located the tip of second needle file, and the vertically draw-in groove is connected to the other end of constant head tank, be provided with corresponding locating piece on the third needle file, when the locating piece prolongs the constant head tank gliding to the draw-in groove, the end of inserting of third needle file just gets into in the second needle file completely.
3. The combined spinal and epidural anesthesia puncture needle according to claim 1, wherein: the liquid outlet hole of the second needle body is positioned at one side of the top end of the needle point.
4. The combined spinal and epidural anesthesia puncture needle according to claim 3, wherein: the needle point of the third needle body is just matched with the needle point inner cavity of the second needle body.
5. The combined spinal and epidural anesthesia puncture needle according to claim 1, wherein: the length from the bottom of the threaded section of the second needle seat to the second needle point is 0.5cm longer than the total length of the outer needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579841.8U CN215739315U (en) | 2021-03-22 | 2021-03-22 | Combined spinal-epidural anesthesia puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579841.8U CN215739315U (en) | 2021-03-22 | 2021-03-22 | Combined spinal-epidural anesthesia puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215739315U true CN215739315U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120579841.8U Active CN215739315U (en) | 2021-03-22 | 2021-03-22 | Combined spinal-epidural anesthesia puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215739315U (en) |
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2021
- 2021-03-22 CN CN202120579841.8U patent/CN215739315U/en active Active
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