A puncture needle and a method of use

Abstract

The present invention discloses a puncture needle and a usage method. The puncture needle includes: a needle body provided with a first channel and a second channel. The left end of the first channel penetrates the needle body along the axial direction of the needle body. The second channel is arranged obliquely upward and to the right from bottom to top. The upper end of the second channel penetrates the outer peripheral wall of the needle body, and the lower end of the second channel communicates with the right end of the first channel; an elastic airbag connected to the outer peripheral wall of the needle body, and the elastic airbag communicates with the first channel or the second channel; a plug block inserted into the second channel, and the plug block is used to block the second channel. The provided first channel serves as a gas flow channel. Since the provided second channel is arranged obliquely upward and to the right from bottom to top, when inflating the elastic airbag, the syringe can be inserted into the plug block obliquely and inject gas into the second channel. The gas enters the elastic airbag through the second channel or the first channel, causing the elastic airbag to bulge. This operation is carried out during the operation, saving steps.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a puncture needle and a using method thereof. Background Art

[0002] An epidural puncture needle is commonly used in local anesthesia. In the prior art, the puncture needle includes a needle body and a stylet connected in the needle body. The stylet is provided as hollow. The tail end of the needle body is connected with an airbag. The cutting end of the stylet can be inserted into the epidural cavity together with the cutting end of the needle body. The tail end of the stylet is used to insert into the airbag. The airbag is pre-filled with gas. After the puncture needle penetrates into the epidural cavity, the tail end of the stylet is inserted into the airbag, and the gas in the bag is released, and the airbag shrinks to indicate that the puncture needle has punctured in place.

[0003] It can be seen that in the prior art, the epidural puncture needle uses the airbag as a separate replaceable component, which wastes resources and increases production costs; even if a single airbag is repeatedly inflated and used, inflation requires removing the airbag, which is inconvenient, and the processes of removing and installing the airbag are cumbersome and inconvenient to use; there may be connection gaps generated when installing the elastic airbag, resulting in poor inflation or failure of the airbag. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a puncture needle, and the airbag of the puncture needle can be repeatedly used without disassembling the airbag, and inflation is convenient and the use is also convenient.

[0005] The present invention also provides a using method of the puncture needle.

[0006] A puncture needle according to an embodiment of the first aspect of the present invention includes: a needle body provided with a first channel and a second channel. The left end of the first channel penetrates the needle body along the axial direction of the needle body. The second channel is inclined from bottom to top and to the right. The upper end of the second channel penetrates the outer peripheral wall of the needle body. The lower end of the second channel communicates with the right end of the first channel; an elastic airbag connected to the outer peripheral wall of the needle body, and the elastic airbag communicates with the first channel or the second channel; a plug block inserted into the second channel, and the plug block is used to block the second channel.

[0007] A puncture needle according to an embodiment of the present invention has at least the following beneficial effects: The provided first channel serves as a gas flow channel. Since the provided second channel is inclined from bottom to top and to the right, when inflating the elastic airbag, the syringe can be inserted into the plug block obliquely and inject gas into the second channel. The gas enters the elastic airbag through the second channel or the first channel, causing the elastic airbag to bulge. This operation is carried out during the operation, saving steps. That is, when the needle body is just inserted into the subcutaneous tissue, because the left end of the first channel is blocked, the gas injected into the second channel will only flow into the elastic airbag, so the elastic airbag will bulge. When the needle body is inserted into the epidural cavity, the air pressure in the epidural cavity is lower than the external atmospheric pressure, and the gas in the elastic airbag will be squeezed out by the elastic airbag, and the elastic airbag shrinks. Because this inflation method is carried out during the operation, it can save operation steps, avoid the trouble of disassembling and assembling the elastic airbag, and because the second channel is inclined, the syringe can also be inserted obliquely when injecting gas, which conforms to ergonomics and the inflation operation is also convenient.

[0008] According to some embodiments of the present invention, it further includes a stylet. The needle body is further provided with a third channel, and the third channel penetrates the left end and the right end of the needle body along the axial direction of the needle body. The stylet is inserted into the third channel. The provided third channel is used for injecting anesthetic or indwelling an epidural anesthesia catheter after successful puncture, and the stylet is used to block the third channel.

[0009] According to some embodiments of the present invention, a conical clamping seat is provided at the right end of the stylet, and a conical recess is provided at the right end of the needle body. When the stylet is inserted into the needle body, the conical clamping seat can be inserted into the conical recess in cooperation. The provided conical clamping seat and the conical recess cooperate to enable the stylet to better cooperate with the needle body and block the third channel.

[0010] According to some embodiments of the present invention, a retaining piece is provided on the radially edge of the conical clamping seat, and the retaining piece protrudes leftward. The retaining piece and the conical clamping seat together define a clamping groove, and the clamping groove clamps the right end of the needle body. The provided retaining piece and the clamping groove can make the stylet be stuck on the needle body, and the stylet will not easily come off and will not interfere with the puncture process.

[0011] According to some embodiments of the present invention, a retaining block is connected to the peripheral wall at the right end of the needle body, and the retaining block is provided on the right side of the elastic airbag. The retaining block is used to be grasped. The retaining block can be used for grasping and also plays a limiting role to prevent the needle body from being inserted too deep. An opening for observing the elastic airbag is provided on the retaining block.

[0012] According to some embodiments of the present invention, the stopper is detachably connected to the right end of the needle body. Different stoppers can be replaced according to different grasping methods, which also facilitates the production of the needle body and reduces production troubles.

[0013] According to some embodiments of the present invention, a mushroom head is provided on the outer peripheral wall of the needle body. The head of the mushroom head protrudes from the outer peripheral wall of the needle body. The mushroom head is provided with a fourth channel, and the fourth channel communicates with the first channel. The elastic airbag is detachably connected to the mushroom head. The mushroom head can act as a barb for the elastic airbag. The elastic airbag sleeves the mushroom head, and the sleeved port of the elastic airbag is shrunk and tightly fastened to the mushroom head. The elastic airbag will not easily detach from the mushroom head and can also ensure airtightness, that is, the elastic airbag and the mushroom head cooperate to ensure both the elastic airbag and its airtightness.

[0014] According to some embodiments of the present invention, scales are provided on the outer peripheral wall of the needle body. The scales are used to indicate the puncture depth, which is convenient for secondary puncture and facilitates subsequent understanding of the depth when indwelling an epidural anesthesia catheter.

[0015] According to some embodiments of the present invention, a needle blade is provided at the left end of the needle body, and an indication recess is provided at the right end of the needle body. The indication recess and the needle blade correspond in the left-right direction. The provided indication recess is used to indicate the needle blade, which is convenient for puncture use. The elastic airbag and the indication recess correspond in the up-down direction.

[0016] A method for using a puncture needle includes the following steps:

[0017] For the needle, observe the indication recess, orient the indication recess downward, and align the needle blade with the position to be inserted;

[0018] Preliminary insertion, insert the needle body into the epidermis until the left end of the first channel is just blocked;

[0019] Inflation, insert a syringe into the plug block, inflate the first channel and the second channel, and then inflate the elastic airbag. After inflation is completed, pull out the syringe;

[0020] Re-insertion, slowly push the needle body forward until the gas in the elastic airbag is released and the front end of the needle body enters the epidural cavity, then stop advancing the needle;

[0021] Anesthesia operation, pull out the needle core, and inject anesthetic or indwell an epidural anesthesia catheter into the epidural cavity through the third channel.

[0022] A method for using a puncture needle according to an embodiment of the present invention has at least the following beneficial effects: The provided first channel serves as a gas flow channel. Since the provided second channel is inclined from bottom to top and to the right, when inflating the elastic airbag, the syringe can be inserted into the plug block obliquely and inject gas into the second channel. The gas enters the elastic airbag through the second channel or the first channel, causing the elastic airbag to bulge. This operation is carried out during the operation, saving steps. That is, when the needle body is just inserted into the subcutaneous tissue, because the left end of the first channel is blocked, the gas injected into the second channel will only flow into the elastic airbag, so the elastic airbag will bulge. When the needle body is inserted into the epidural cavity, the air pressure in the epidural cavity is lower than the external atmospheric pressure, and the gas in the elastic airbag will be squeezed out by the elastic airbag, and the elastic airbag shrinks. Since this inflation method is carried out during the operation, it can save operation steps and avoid the trouble of disassembling and assembling the elastic airbag.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a schematic structural diagram of the puncture needle according to an embodiment of the present invention when not in use;

[0026] Figure 2 is Figure 1 a schematic structural diagram of the puncture needle shown during inflation;

[0027] Figure 3 is Figure 1 a schematic structural diagram of the puncture needle shown when using an epidural anesthesia catheter for indwelling;

[0028] Figure 4 is Figure 1 a top view of the puncture needle shown.

[0029] Needle body 100, first channel 110, second channel 120, third channel 130, conical recess 140, stop block 150, opening 151, mushroom head 160, fourth channel 161, needle blade 170, indicating recess 180;

[0030] Elastic airbag 200, plug block 300;

[0031] Needle core 400, conical card seat 410, retaining piece 411, card slot 412;

[0032] Epidural anesthesia catheter 500. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0034] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understanding of "greater than", "less than", "exceeding", etc. does not include the present number, and understanding of "above", "below", "within", etc. includes the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, words such as "set", "install", "connect", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0037] Refer to Figures 1 to 4, A puncture needle, comprising: a needle body 100, provided with a first channel 110 and a second channel 120. The left end of the first channel 110 penetrates the needle body 100 along the axial direction of the needle body 100. The second channel 120 is arranged obliquely from bottom to top and to the right. The upper end of the second channel 120 penetrates the outer peripheral wall of the needle body 100, and the lower end of the second channel 120 communicates with the right end of the first channel 110; an elastic airbag 200, connected to the outer peripheral wall of the needle body 100, and the elastic airbag 200 communicates with the first channel 110 or the second channel 120; a plug 300, inserted into the second channel 120, and the plug 300 is used to block the second channel 120. The provided first channel 110 serves as a gas flow channel. Since the provided second channel 120 is arranged obliquely from bottom to top and to the right, when inflating the elastic airbag 200, the syringe can be inserted obliquely into the plug 300 and inject gas into the second channel 120. The gas enters the elastic airbag 200 through the second channel 120 or the first channel 110, causing the elastic airbag 200 to bulge. This operation is performed during the operation, saving steps. That is, when the needle body 100 is just inserted into the subcutaneous tissue, since the left end of the first channel 110 is blocked, the gas injected into the second channel 120 will only flow into the elastic airbag 200, so the elastic airbag 200 will bulge. When the needle body 100 is inserted into the epidural cavity, the gas in the elastic airbag 200 will be squeezed out by the elastic airbag 200, and the elastic airbag 200 will shrink. Because this inflation method is performed during the operation, it can save a lot of steps, avoid the trouble of disassembling and assembling the elastic airbag 200, and because the second channel 120 is obliquely arranged, the syringe can also be inserted obliquely when injecting gas, which conforms to ergonomics and the inflation operation is also convenient. It can be understood that if the puncture needle is inserted too shallowly and the front end of the puncture needle cannot reach the epidural cavity, it will lead to anesthesia failure; if the puncture needle is inserted too deeply, it may damage the spinal cord or surrounding nerves and blood vessels. Therefore, the puncture of the puncture needle in place requires indication. Refer to Figure 1 , The second channel 120 is arranged obliquely from bottom to top and to the right.

[0038] In some embodiments, it further includes a stylet 400. The needle body 100 is further provided with a third channel 130. The third channel 130 penetrates the left end and the right end of the needle body 100 along the axial direction of the needle body 100. The stylet 400 is inserted into the third channel 130. The provided third channel 130 is used to inject anesthetic or indwell an epidural anesthesia catheter 500 after successful puncture, and the stylet is used to block the third channel 130.

[0039] In some embodiments, a conical clamping seat 410 is provided at the right end of the needle core 400, and a conical recess 140 is provided at the right end of the needle body 100. When the needle core 400 is inserted into the needle body 100, the conical clamping seat 410 can be inserted into the conical recess 140 in a matching manner. The conical clamping seat 410 and the conical recess 140 are matched with each other, so that the needle core 400 can better cooperate with the needle body 100 and block the third channel 130, that is, the shapes of the conical clamping seat 410 and the conical recess 140 are in conformity.

[0040] In some embodiments, a retaining piece 411 is provided on the radially outer edge of the conical clamping seat 410. The retaining piece 411 protrudes leftward. The retaining piece 411 and the conical clamping seat 410 together define a clamping groove 412. The clamping groove 412 clamps the right end of the needle body 100. The retaining piece 411 and the clamping groove 412 provided can make the needle core 400 be clamped on the needle body 100, and the needle core 400 will not easily come off and will not interfere with the puncture process. It can be understood that the retaining piece 411 and the outer peripheral wall of the needle body 100 form an interference fit, or a contact convex part is provided on the side of the retaining piece 411 close to the needle body 100, and the contact convex part and the outer peripheral wall of the needle body 100 form an interference fit.

[0041] In some embodiments, a retaining block 150 is connected to the peripheral wall at the right end of the needle body 100. The retaining block 150 is arranged to the right of the elastic airbag 200. The retaining block 150 is used to be grasped. The retaining block 150 can be used for grasping and can also play a limiting role to prevent the needle body 100 from being inserted too deeply. An opening 151 for observing the elastic airbag 200 is provided on the retaining block 150.

[0042] Referring to Figure 4 , the retaining block 150 extends in the front-rear direction, the elastic airbag 200 and the fourth channel 161 are arranged in the up-down direction, and the extension line of the retaining block 150 in the front-rear direction is perpendicular to the axis of the fourth channel 161. It can be understood that the retaining block 150 is parallel to the horizontal plane, and the fourth channel 161 is perpendicular to the horizontal plane. Because the retaining block 150 extends relatively long in the front-rear direction, the design that the extension line of the retaining block 150 is perpendicular to the axis of the fourth channel 161 is convenient for clinical operation and avoids interference with the operation due to the retaining block 150 blocking the elastic airbag 200.

[0043] In some embodiments, the retaining block 150 is detachably connected to the right end of the needle body 100. Different retaining blocks 150 can be replaced according to different grasping methods, which is also convenient for manufacturing the needle body 100 and reduces the trouble in production. It should be noted that the retaining block 150 can rotate around the axis of the needle body 100.

[0044] In some embodiments, a mushroom head 160 is provided on the outer peripheral wall of the needle body 100. The head of the mushroom head 160 protrudes from the outer peripheral wall of the needle body 100. The mushroom head 160 is provided with a fourth channel 161, and the fourth channel 161 communicates with the first channel 110. The elastic airbag 200 is detachably connected to the mushroom head 160. The mushroom head 160 can act as a barb for the elastic airbag 200. The elastic airbag 200 is sleeved on the mushroom head 160. The sleeved port of the elastic airbag 200 is shrunk and tightly fastened on the mushroom head 160. The elastic airbag 200 will not easily detach from the mushroom head 160, and airtightness can be ensured. That is, the elastic airbag 200 and the mushroom head 160 cooperate to ensure both the elastic airbag 200 and the airtightness of the elastic airbag 200.

[0045] In some embodiments, the mushroom head 160 and the needle body 100 are integrally formed, which is convenient for forming and reduces the trouble in production. It can be understood that the mushroom head 160 and the needle body 100 are integrally formed, that is, the mushroom head 160 and the needle body 100 are made in one mold.

[0046] In some embodiments, scales are provided on the outer peripheral wall of the needle body 100. The scales are used to indicate the puncture depth, which is convenient for secondary puncture or for understanding the depth when indwelling an epidural anesthesia catheter 500.

[0047] In some embodiments, a needle blade 170 is provided at the left end of the needle body 100, and an indicating recess 180 is provided at the right end of the needle body 100. The indicating recess 180 and the needle blade 170 correspond in the left-right direction. The provided indicating recess 180 is used to indicate the needle blade 170, which is convenient for using the puncture. It should be noted that the indicating recess 180 is provided with filler particles with an indicating color.

[0048] A method for using a puncture needle includes the following steps:

[0049] For the needle, observe the indicating recess 180, turn the indicating recess 180 downward, and align the needle blade 170 with the position to be inserted; or observe the elastic airbag 200, and the opposite direction is the direction of the needle blade 170;

[0050] Preliminary insertion, insert the needle body 100 into the epidermis until the left end of the first channel 110 is just blocked;

[0051] Inflation, insert a syringe into the plug 300, inflate the first channel 110 and the second channel 120, and then inflate the elastic airbag 200. After inflation is completed, pull out the syringe;

[0052] Re-insertion, slowly push the needle body 100 forward until the gas in the elastic airbag 200 is released, insert the needle body 100 into the epidural cavity, and stop inserting the needle;

[0053] For anesthetic operation, the stylet 400 is removed, and anesthetic is injected into the epidural space or an epidural anesthesia catheter 500 is indwelled through the third channel 130.

[0054] The first channel 110 provided is used as a gas flow channel. Since the second channel 120 provided is inclined from bottom to top and to the right, when inflating the elastic airbag 200, the syringe can be inserted into the plug 300 obliquely, and gas is injected into the second channel 120. The gas enters the elastic airbag 200 through the second channel 120 or the first channel 110, causing the elastic airbag 200 to bulge. This operation is performed during the operation, saving steps. That is, when the needle body 100 is just inserted into the subcutaneous tissue, since the left end of the first channel 110 is blocked, the gas injected into the second channel 120 will only flow into the elastic airbag 200, so the elastic airbag 200 will bulge. When the needle body 100 is inserted into the epidural space, the air pressure in the epidural space is lower than the external atmospheric pressure, and the gas in the elastic airbag 200 will be squeezed out by the elastic airbag 200, and the elastic airbag 200 shrinks. Since this inflation method is performed during the operation, it can save operation steps and eliminate the trouble of disassembling and assembling the elastic airbag 200.

[0055] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A puncture needle, characterized in that, Comprising: A needle body, provided with a first channel and a second channel. The left end of the first channel penetrates the needle body along the axial direction of the needle body. The second channel is arranged obliquely upward and to the right. The upper end of the second channel penetrates the outer peripheral wall of the needle body, and the lower end of the second channel communicates with the right end of the first channel; An elastic airbag. A mushroom head is arranged on the outer peripheral wall of the needle body. The head of the mushroom head protrudes from the outer peripheral wall of the needle body. The mushroom head is provided with a fourth channel which communicates with the first channel. The elastic airbag is detachably connected to the mushroom head; A plug block, inserted into the second channel. The plug block is used to block the second channel. When inflation is required, a syringe is inserted into the plug block to inflate the first channel and the second channel, and then inflate the elastic airbag; The needle body is further provided with a third channel parallel to the first channel. The third channel penetrates the left end and the right end of the needle body along the axial direction of the needle body. A needle core is further included. The needle core is blocked in the third channel. When performing anesthetic operation, the needle core is pulled out, and anesthetic is injected into the epidural cavity or an epidural anesthesia catheter is indwelled through the third channel. A conical seat is arranged at the right end of the needle core, and a conical recess is arranged at the right end of the needle body. When the needle core is inserted into the needle body, the conical seat can be inserted into the conical recess in a matching manner. A retaining piece is arranged at the edge of the conical seat, and the retaining piece protrudes leftward. The retaining piece and the conical seat together define a clamping groove, and the clamping groove clamps the right end of the needle body.

2. A puncture needle according to claim 1, characterized in that: A retaining block is connected to the peripheral wall of the right end of the needle body. The retaining block is arranged to the right of the elastic airbag. The retaining block is used to be grasped, and an opening for observing the elastic airbag is formed in the retaining block.

3. The puncture needle according to claim 2, characterized in that: The retaining block is detachably connected to the right end of the needle body.

4. A puncture needle according to claim 1, characterized in that: Scales are arranged on the outer peripheral wall of the needle body.

5. A puncture needle according to claim 4, characterized in that: A needle blade is arranged at the left end of the needle body, and an indicating recess is arranged at the right end of the needle body. The indicating recess and the needle blade correspond in the left-right direction, and the elastic airbag and the indicating recess correspond in the up-down direction.

Images