Ultrasonic-guided nerve block puncture needle

Abstract

The invention discloses an ultrasound-guided nerve block puncture needle, and belongs to the technical field of medical anesthesia, the ultrasound-guided nerve block puncture needle comprises a handheld sleeve mechanism, one end of the handheld sleeve mechanism is spirally connected with a threaded cap, a metal puncture needle is installed in the handheld sleeve mechanism, and the metal puncture needle is connected with a metal sleeve. One end of the metal puncture needle is fixedly connected with a connecting suite, the other end of the connecting suite is sleeved with a connecting hose, the top of the handheld sleeve mechanism is fixedly connected with an integrated limiting mechanism, and a pressing puncture mechanism is slidably connected to the portion, at one end of the integrated limiting mechanism, in the handheld sleeve mechanism. The handheld sleeve mechanism and the pressing puncture mechanism are designed, a handheld sleeve body is always located on the outer side of the skin of a patient in the puncture process, then a doctor has a better force application point, the puncture stability is improved, and the puncture force and direction are more easily grasped.

Description

Technical Field

[0001] The invention belongs to the technical field of medical anesthesia, and in particular relates to an ultrasound-guided nerve block puncture needle. Background Art

[0002] Puncture is a common surgical term in medicine. It is a diagnostic and treatment technique that involves inserting a puncture needle into a body cavity to extract secretions for testing, injecting gas or contrast agent into the body cavity for angiography, or injecting drugs into the body cavity. The purpose of puncture is to draw blood for testing, blood transfusion, infusion, and insert a catheter for angiography, etc. Among them, a nerve block puncture needle is a medical device specifically used for nerve block anesthesia, which is often used in clinical anesthesia and pain management. It is usually used to puncture specific nerves or nerve plexuses and inject anesthetic drugs to block the conduction of pain signals, thereby achieving the effect of local anesthesia or pain relief. The main uses include: local anesthesia, which reduces or eliminates pain during surgery or treatment by blocking nerves related to the surgical site; obstetric anesthesia, such as epidural anesthesia and spinal anesthesia, which are used to relieve pain during childbirth; chronic pain management, such as for relieving long-term pain symptoms caused by neuropathic pain or joint pain; diagnosis, sometimes nerve blocks can also be used to diagnose specific nerve injuries or diseases; in order to ensure the accuracy of the puncture, ultrasound is often used to guide the puncture so that the needle can reach the designated location.

[0003] During the puncture operation guided by ultrasound, the appropriate patient position is selected according to the different sites of nerve block. Under ultrasound guidance, the location of the target nerve is first confirmed. Through scanning, the nerves, blood vessels, muscles and other structures are clearly displayed, and the insertion angle of the puncture needle is adjusted according to the ultrasound image. Generally speaking, the puncture needle should be at a small angle to the skin surface and gradually enter the vicinity of the target nerve. After confirming that the puncture needle is accurately positioned, the local anesthetic is slowly injected. In this method, the doctor often holds the ultrasound probe in one hand and performs the puncture with the other hand during the puncture process. However, the existing puncture needles are relatively long, and the doctor holds the tail end. This makes it difficult to control the direction of the needle and the puncture speed during the puncture process, which in turn affects the puncture effect. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide an ultrasound-guided nerve block puncture needle.

[0005] The technical solution adopted to solve the above technical problems is: to provide an ultrasound-guided nerve block puncture needle, comprising a handheld sleeve mechanism, one end of the handheld sleeve mechanism is spirally connected with a threaded cover, and a metal puncture needle is installed inside the handheld sleeve mechanism; One end of the metal puncture needle is fixedly connected to a connection kit, the other end of the connection kit is sleeved with a connection hose, and the top of the handheld sleeve mechanism is fixedly connected to an integrated limiting mechanism; A pressing and puncturing mechanism is slidably connected to one end of the integrated limiting mechanism inside the handheld sleeve mechanism, a driving reset mechanism is fixedly connected to both the left and right sides of the inner wall of the handheld sleeve mechanism, and a clamping mechanism is installed inside the handheld sleeve mechanism on the side away from the threaded cover.

[0006] Furthermore, the handheld sleeve mechanism includes a sleeve body, one end of the sleeve body is fixedly connected to a needle outlet end cover, two arc-shaped limit frames are fixedly connected to one side of the top of the sleeve body, a rotation limit plate is fixedly connected between the two ends of the arc-shaped limit frame, strong permanent magnet blocks are installed inside the two rotation limit plates, the bottom inner surface of the sleeve body is fixedly connected to a bottom limit guide rail, and the inner wall of the sleeve body is fixedly connected to integrated limit blocks on both sides of the pressing and puncture mechanism.

[0007] Through the above technical solution, when in use, the metal puncture needle can be limited and fixed by the needle outlet end cover, and the two arc-shaped limit frames can be used to install two rotating limit plates, and then the metal puncture needle can be clamped and fixed by the strong permanent magnet blocks inside the two rotating limit plates to avoid the metal puncture needle from shifting when the whole puncture needle moves. At the same time, the bottom limit guide rail can realize the limiting effect of the pressing puncture mechanism, and the integrated limit card block can realize the fixation and rotation limit of the clamping mechanism.

[0008] Furthermore, one end of the inner wall of the sleeve body is a threaded structure, and a circular through hole corresponding to the metal puncture needle is opened in the center of the threaded cover.

[0009] Through the above technical solution, one side of the sleeve body is blocked by the spiral connection of the threaded cover, and at the same time, the circular through hole does not affect the penetration of the metal puncture needle.

[0010] Furthermore, the integrated limiting mechanism includes an integrated thick plate fixedly connected to the top of the handheld sleeve mechanism, and storage grooves and limiting sliding grooves are respectively provided on both sides of the integrated thick plate. A scale is provided on the side close to the limiting sliding groove at the rear end of the top of the integrated thick plate.

[0011] Through the above technical solution, when the pressing and puncturing mechanism is pushed, the limiting sliding groove can be used to achieve the limited sliding of the pressing and puncturing mechanism, and the sealing baffle can be stored through the storage groove to ensure that the sliding of the pressing and puncturing mechanism is not affected. While pushing the pressing and puncturing mechanism, the length of the metal puncture needle inserted this time can be roughly observed through the pointer and the scale.

[0012] Furthermore, the pressing and puncturing mechanism includes an inclined square bar slidably connected to one side of the integrated limiting mechanism, the bottom of the inclined square bar is fixedly connected to a bottom limiting bar, the left and right end surfaces of the inclined square bar are fixedly connected to side limiting connecting plates, the inside of the inclined square bar is slidably connected to a sliding pressing block, the bottom of the sliding pressing block and the top of the center notch of the inclined square bar are both provided with a semicircular rubber sleeve, the top of the sliding pressing block is fixedly connected to a square connecting block, the top of the square connecting block is fixedly connected to a connecting round rod, the top of the outer wall of the connecting round rod is fixedly connected to a sealing top block, the bottom of the sealing top block and the inside of the inclined square bar are fixedly connected with a first return spring, the top of the connecting round rod is fixedly connected to a pressing head, and the top of one side of the inclined square bar is respectively fixedly connected to a sealing baffle and a pointer.

[0013] With the above technical solution, the doctor holds the sleeve body and presses the pressing head with his fingers, thereby driving the connecting round rod, the square connecting block and the sliding pressing block to descend. At this time, the first return spring will be compressed through the sealing top block and the circular plate inside the inclined square strip until the metal puncture needle is squeezed and fixed through the two semicircular rubber sleeves. At this time, the tip of the metal puncture needle is inserted into the skin at a small angle, and the position of the tip of the metal puncture needle is observed in real time by controlling the ultrasonic probe at the same time. After insertion, the pressing head can be pushed to clamp the metal puncture needle through the two semicircular rubber sleeves for slow movement. The two side limit connecting plates move accordingly, and then pull the corresponding two second return springs for stretching. When the inclined square bar reaches the other end of the limit sliding groove or reaches the maximum movement of the finger, the finger can be released. At this time, the first return spring and the two second return springs are reset at the same time. The first return spring causes the sliding pressing block to rise, and the two second return springs pull the overall pressing puncture mechanism back to the other end of the limit sliding groove through the two side limit connecting plates. It can be operated with one hand. At the same time, the handheld sleeve mechanism of the doctor's handheld part is always close to the patient's skin, ensuring the stability of the puncture.

[0014] Furthermore, the center of the bevel square strip is provided with grooves and through holes corresponding to the sliding pressing block, the square connecting block, the connecting round rod and the sealing top block.

[0015] The above technical solution ensures that the whole formed by the sliding pressing block, the square connecting block, the connecting round rod and the sealing top block can slide and be reset under the action of the first reset spring.

[0016] Furthermore, the driving reset mechanism includes two fixed round blocks fixedly connected to the inner wall of the handheld sleeve mechanism, a supporting round rod is fixedly connected between the two fixed round blocks, and a second reset spring is fixedly connected between the fixed round block at one end of the supporting round rod and the side limiting connecting plate.

[0017] Through the above technical solution, the two second reset springs can be used to reset the pressing puncture mechanism after pushing the pressing puncture mechanism for puncture, and the position of the metal puncture needle that has been punctured will not be affected, so that continuous puncture work can be achieved.

[0018] Furthermore, the clamping mechanism includes a fixed ring plate engaged in the hand-held sleeve mechanism and an adjusting rotating ring plate rotatably connected to the hand-held sleeve mechanism, a hexagonal notch is opened on one side of the fixed ring plate, and a plurality of limit sliders are slidably connected to the hexagonal notch, a plurality of limit sliders are fixedly connected to one side of a triangular clamp, a plurality of triangular clamps are fixedly connected to the other side of a driving round block, a plurality of triangular clamps are fixedly connected to one side of the bottom of the plurality of triangular clamps, and an iron shift block is fixedly connected to the top of the adjusting rotating ring plate.

[0019] Through the above technical solution, the iron shift block is pushed to the other end, so that the strong permanent magnet block inside the rotating limit plate at the other end of the arc limit frame begins to adsorb the iron shift block. At the same time, when the iron shift block is pushed, the adjusting rotating ring plate will be driven to rotate under the limit of the integrated limit block, and then the through holes on the adjusting rotating ring plate and the engagement of multiple driving round blocks are used to drive multiple corresponding triangular clamps to slide, so that the ends of the multiple triangular clamps are close to each other, and then the metal puncture needle is clamped by multiple rubber pads to prevent the metal puncture needle from moving during the movement.

[0020] Furthermore, the adjusting rotating ring plate is provided with a plurality of strip-shaped through holes corresponding to the driving round blocks, and a through hole corresponding to the iron shifting block is provided on one side of the top of the sleeve body.

[0021] Through the above technical solution, the driving and clamping of multiple triangular clamps can be achieved by rotating and adjusting the rotating ring plate through multiple bar-shaped through holes.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention designs a hand-held sleeve mechanism and a pressing puncture mechanism. The pressing head is pressed by the finger, so that the two semicircular rubber sleeves can complete the squeezing and fixing of the metal puncture needle. Then, the pressing head is pushed to drive the metal puncture needle to complete the puncture work. When the other end of the limit sliding groove is reached or the maximum movement of the finger is reached, the finger can be released, and the first reset spring and the two second reset springs are used to reset at the same time, and then the puncture work can be performed again. The metal puncture needle can be stably pushed by repeatedly pushing and pressing the puncture mechanism. During the puncture process, the main body of the hand-held sleeve is always on the outside of the patient's skin, so that the doctor has a better force point and improves the puncture accuracy. Stable and easier to control the force and direction of puncture; (2) The present invention designs a clamping mechanism. After the entire device is moved and the puncture is completed, the iron block is pushed to the other end, so that the strong permanent magnet block at the other end of the arc-shaped limit frame begins to adsorb the iron block. When the iron block is pushed, the adjusting rotating ring plate is driven to rotate, thereby driving multiple corresponding triangular clamps to slide, thereby making the ends of the multiple triangular clamps close to each other, and then clamping and fixing the metal puncture needle through multiple rubber pads. Auxiliary fixation can be performed after the metal puncture needle is installed and after the puncture work is completed, thereby avoiding the metal puncture needle from shifting during the movement of the device and avoiding the overall handheld sleeve mechanism from shifting during the subsequent injection of anesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the hand-held sleeve mechanism of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the hand-held sleeve mechanism of the present invention; Figure 4 It is a schematic diagram of a three-dimensional cross-sectional structure of a hand-held sleeve mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the integrated limiting mechanism of the present invention; Figure 6 The present invention Figure 5 A partial enlarged view of the middle A; Figure 7 It is a schematic diagram of the structure of the pressing and puncturing mechanism of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the pressing and piercing mechanism of the present invention; Fig. 9 is a schematic cross-sectional structure diagram of the pressing and puncturing mechanism of the present invention; Fig.10 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Fig.11 It is a schematic diagram of the side structure of the triangular splint of the present invention.

[0024] Figure numerals: 1. Hand-held sleeve mechanism; 101. Sleeve body; 102. Needle outlet cover; 103. Arc-shaped limit frame; 104. Rotary limit plate; 105. Strong permanent magnet block; 106. Bottom limit guide rail; 107. Integrated limit card block; 2. Threaded cover; 3. Metal puncture needle; 4. Connection kit; 5. Connection hose; 6. Integrated limit mechanism; 601. Integrated thick plate; 602. Storage slot; 603. Limit sliding slot; 604. Scale; 7. Press puncture mechanism; 701. Bevel square bar; 702. Bottom limit bar; 703. Side limit connecting plate; 7 04, sliding pressing block; 705, semicircular rubber sleeve; 706, square connecting block; 707, connecting round rod; 708, sealing top block; 709, first reset spring; 710, pressing head; 711, sealing baffle; 712, pointer; 8, driving reset mechanism; 801, fixed round block; 802, supporting round rod; 803, second reset spring; 9, clamping mechanism; 901, fixed ring plate; 902, adjusting rotating ring plate; 903, hexagonal notch; 904, limiting slider; 905, triangular clamp; 906, driving round block; 907, rubber pad; 908, iron shift block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] like Figure 1-Figure 6As shown, an ultrasound-guided nerve block puncture needle of the present embodiment comprises a handheld sleeve mechanism 1, the handheld sleeve mechanism 1 comprises a sleeve body 101, one end of the sleeve body 101 is fixedly connected with a needle outlet end cover 102, one side of the top of the sleeve body 101 is fixedly connected with two arc-shaped limit frames 103, both ends of the arc-shaped limit frames 103 are fixedly connected with a rotation limit plate 104, the two rotation limit plates 104 are both installed with a strong permanent magnet block 105, the bottom inner surface of the sleeve body 101 is fixedly connected with a bottom limit guide rail 106, the inner wall of the sleeve body 101 is fixedly connected with an integrated limit card block 107 on both sides of the pressing puncture mechanism 7, when in use, the metal puncture needle 3 can be limited and fixed by the needle outlet end cover 102, and the two arc-shaped limit frames 103 can be realized Two rotating limit plates 104 are now installed, and the metal puncture needle 3 is clamped and fixed by the strong permanent magnet blocks 105 inside the two rotating limit plates 104 to prevent the metal puncture needle 3 from being offset when the entire puncture needle moves. At the same time, the bottom limit guide rail 106 can realize the limiting effect on the pressing puncture mechanism 7, and the integrated limit card block 107 can realize the fixation and rotation limit of the clamping mechanism 9. One end of the inner wall of the sleeve body 101 is a threaded structure, and a circular through hole corresponding to the metal puncture needle 3 is opened in the center of the threaded cover 2. One side of the sleeve body 101 is blocked by the spiral connection of the threaded cover 2. At the same time, the circular through hole does not affect the penetration of the metal puncture needle 3. One end of the handheld sleeve mechanism 1 is spirally connected with the threaded cover 2, and the metal puncture needle 3 is installed inside the handheld sleeve mechanism 1.

[0027] like Figure 1-Figure 9 As shown, one end of the metal puncture needle 3 is fixedly connected to a connection kit 4, and the other end of the connection kit 4 is sleeved with a connection hose 5. The top of the handheld sleeve mechanism 1 is fixedly connected to an integrated limiting mechanism 6, and the integrated limiting mechanism 6 includes an integrated thick plate 601 fixedly connected to the top of the handheld sleeve mechanism 1, and the two sides of the integrated thick plate 601 are respectively provided with a storage groove 602 and a limiting sliding groove 603. The rear end of the top of the integrated thick plate 601 is provided with a scale 604 on the side close to the limiting sliding groove 603. When the pressing puncture mechanism 7 is pushed, the limiting sliding groove 603 can be used to realize the limited sliding of the pressing puncture mechanism 7. At the same time, the sealing baffle 711 can be stored through the storage groove 602 to ensure that the sliding of the pressing puncture mechanism 7 is not affected. When the pressing puncture mechanism 7 is pushed, the length of the metal puncture needle 3 inserted this time can be roughly observed through the pointer 712 and the scale 604. like Figure 1-Figure 9As shown, a pressing and piercing mechanism 7 is slidably connected to one end of the integrated limiting mechanism 6 inside the hand-held sleeve mechanism 1, and the pressing and piercing mechanism 7 includes an inclined square bar 701 slidably connected to one side of the integrated limiting mechanism 6, and the bottom of the inclined square bar 701 is fixedly connected to a bottom limiting bar 702, and the left and right end surfaces of the inclined square bar 701 are fixedly connected to side limiting connecting plates 703, and the inside of the inclined square bar 701 is slidably connected to a sliding pressing block 704, and the bottom of the sliding pressing block 704 and the top of the center notch of the inclined square bar 701 are both provided with a semicircular rubber sleeve 705, and the top of the sliding pressing block 704 is fixedly connected to a square connecting block 706, and the top of the square connecting block 706 is fixedly connected to a connecting round rod 7 07, a sealing top block 708 is fixedly connected to the top of the outer wall of the connecting round rod 707, a first return spring 709 is fixedly connected between the bottom of the sealing top block 708 and the inside of the inclined square strip 701, a pressing head 710 is fixedly connected to the top of the connecting round rod 707, and a sealing baffle 711 and a pointer 712 are fixedly connected to the top of one side of the inclined square strip 701. The doctor holds the sleeve body 101 and presses the pressing head 710 with his finger, thereby driving the connecting round rod 707, the square connecting block 706 and the sliding pressing block 704 to descend. At this time, the first return spring 709 will be compressed through the sealing top block 708 and the circular plate inside the inclined square strip 701 until the alignment is completed through the two semicircular rubber sleeves 705. The metal puncture needle 3 is squeezed and fixed, and the tip of the metal puncture needle 3 is inserted into the skin at a small angle. The position of the tip of the metal puncture needle 3 is observed in real time by controlling the ultrasonic probe at the same time. After insertion, the pressing head 710 can be pushed to clamp the metal puncture needle 3 through the two semicircular rubber sleeves 705 for slow movement. At the same time, the two side limit connecting plates 703 move accordingly, thereby pulling the corresponding two second return springs 803 for stretching. When the inclined square bar 701 reaches the other end of the limit sliding groove 603 or reaches the maximum extent of finger movement, the finger can be released. At this time, the first return spring 709 and the two second return springs 803 are reset at the same time, and the first return spring 709 makes The sliding pressing block 704 rises, and the two second return springs 803 pull the overall pressing puncture mechanism 7 back to the other end of the limit sliding groove 603 through the two side limit connecting plates 703. It can be operated with one hand. At the same time, the hand-held sleeve mechanism 1 of the doctor's hand-held part is always close to the patient's skin, ensuring the stability of the puncture. The center of the inclined square bar 701 is provided with grooves and through holes corresponding to the sliding pressing block 704, the square connecting block 706, the connecting round rod 707 and the sealing top block 708, ensuring that the sliding pressing block 704, the square connecting block 706, the connecting round rod 707 and the sealing top block 708 The whole can slide and be reset under the action of the first return spring 709.

[0028] like Figure 1-Figure 11As shown, the left and right sides of the inner wall of the hand-held sleeve mechanism 1 are fixedly connected with a driving reset mechanism 8, and the driving reset mechanism 8 includes two fixed round blocks 801 fixedly connected to the inner wall of the hand-held sleeve mechanism 1, and a supporting round rod 802 is fixedly connected between the two fixed round blocks 801, and a second reset spring 803 is fixedly connected between the fixed round block 801 at one end of the supporting round rod 802 and the side limit connecting plate 703. Through the two second reset springs 803, the pressing and puncturing mechanism 7 can be reset after the puncturing mechanism 7 is pushed to perform puncture, and at the same time, it will not affect the punctured part. The metal puncture needle 3 is positioned to realize continuous puncture work. A clamping mechanism 9 is installed on the side away from the threaded cover 2 inside the handheld sleeve mechanism 1. The clamping mechanism 9 includes a fixed ring plate 901 that is engaged with the inside of the handheld sleeve mechanism 1 and an adjusting rotating ring plate 902 that is rotatably connected to the inside of the handheld sleeve mechanism 1. A hexagonal notch 903 is provided on one side of the fixed ring plate 901. A plurality of limiting sliders 904 are slidably connected to the hexagonal notch 903. A triangular clamp 905 is fixedly connected to one side of the plurality of limiting sliders 904. A plurality of triangular clamps 905 are fixedly connected to the other side. The driving round block 906 and the bottom side of the multiple triangular clamps 905 are fixedly connected with a rubber pad 907, and the top of the adjusting rotating ring plate 902 is fixedly connected with an iron block 908, and the iron block 908 is pushed to the other end, so that the strong permanent magnet block 105 inside the rotating limit plate 104 at the other end of the arc limit frame 103 begins to adsorb the iron block 908, and at the same time, when the iron block 908 is pushed, the adjusting rotating ring plate 902 will be driven to rotate under the limit of the integrated limit block 107, and then the through holes on the adjusting rotating ring plate 902 and the multiple driving round blocks 90 6 is engaged to drive multiple corresponding triangular clamps 905 to slide, so that the ends of the multiple triangular clamps 905 are close to each other, and then the metal puncture needle 3 is clamped by multiple rubber pads 907 to prevent the metal puncture needle 3 from moving during the movement. A plurality of bar-shaped through holes corresponding to the driving round block 906 are opened on the adjusting rotating ring plate 902, and a through hole corresponding to the iron shift block 908 is opened on the top side of the sleeve body 101. The driving clamping of the multiple triangular clamps 905 can be achieved by rotating the adjusting rotating ring plate 902 through the multiple bar-shaped through holes.

[0029] The working principle of this embodiment is as follows. Before use, the device is subjected to multiple disinfection and sterilization treatments. After disinfection, the other end of the metal puncture needle 3 is connected to the connecting kit 4, and the other end of the connecting kit 4 is connected to the connecting hose 5 connected to the anesthesia machine. At the same time, the metal puncture needle 3 is passed through the threaded cover 2, the pressing puncture mechanism 7 and the clamping mechanism 9 respectively, and finally extends out from the needle outlet end cover 102. At this time, the iron shift block 908 is shifted to the other end, so that the strong permanent magnet block 105 inside the rotating limit plate 104 at the other end of the arc-shaped limit frame 103 begins to adsorb the iron shift block 908. When the iron shift block 908 is shifted, the adjusting rotating ring plate 902 will be driven to rotate under the limit of the integrated limit block 107, and then the through holes on the adjusting rotating ring plate 902 and the engagement of multiple driving round blocks 906 are driven to slide multiple corresponding triangular clamps 905, so that multiple triangular clamps The ends of the plates 905 are close to each other, and then the metal puncture needle 3 is clamped by multiple rubber pads 907 to prevent the metal puncture needle 3 from being offset during the movement. At the same time, the distance from the connection kit 4 to the threaded cover 2 is measured. After the puncture is completed, it can be measured again. The difference between the two is the insertion length of the metal puncture needle 3. Then check whether the ultrasonic equipment can work normally. The doctor selects the patient's body position and continuously presents the structures such as nerves, blood vessels, and muscles through ultrasonic images through the ultrasonic probe. At the same time, through special treatment of the needle tip, the needle tip development effect is enhanced under ultrasound to achieve the effect of precise puncture positioning, such as treating the needle tip with a reflective coating, using an air-containing needle tip, using an ultrasonic contrast agent, or selecting materials and designs with excellent echo characteristics. Through these methods, the appearance of the needle tip in the ultrasonic image can be significantly improved, helping doctors to accurately locate and reduce errors during the puncture process; When puncturing, the iron shift block 908 is moved, so that the multiple triangular clamps 905 release the clamping of the metal puncture needle 3. Then the doctor holds the sleeve body 101 and presses the pressing head 710 with his fingers, thereby driving the connecting round rod 707, the square connecting block 706 and the sliding pressing block 704 to descend. At this time, the first return spring 709 is compressed through the sealing top block 708 and the circular plate inside the inclined square strip 701 until the metal puncture needle 3 is squeezed and fixed through the two semicircular rubber sleeves 705. At this time, the tip of the metal puncture needle 3 is inserted into the skin at a small angle, and the position of the tip of the metal puncture needle 3 is observed in real time by controlling the ultrasonic probe at the same time. After insertion, the pressing head 710 can be pushed to clamp the metal through the two semicircular rubber sleeves 705. The puncture needle 3 is moved slowly and is constantly observed through ultrasonic images. During the movement, the length of the metal puncture needle 3 inserted this time can be roughly observed through the pointer 712 and the scale 604. At the same time, the two side limit connecting plates 703 move accordingly, thereby pulling the corresponding two second return springs 803 for stretching. When the inclined square bar 701 reaches the other end of the limit sliding groove 603 or reaches the maximum extent of finger movement, the finger can be released. At this time, the first return spring 709 and the two second return springs 803 are reset at the same time, and the first return spring 709 causes the sliding pressing block 704 to rise. The two second return springs 803 pull the entire pressing puncture mechanism 7 back to the other end of the limit sliding groove 603 through the two side limit connecting plates 703; The above operation is repeated in the same way until the needle tip of the metal puncture needle 3 reaches the target position as observed by ultrasonic imaging. At this time, the iron block 908 is moved again, and the metal puncture needle 3 is repositioned through multiple triangular splints 905 and corresponding rubber pads 907, and then the local anesthetic is slowly injected through the anesthesia machine. The diffusion of the drug around the nerve can be observed through ultrasonic imaging to ensure the anesthetic effect and avoid accidental injection into other parts such as blood vessels. At the same time, the patient is closely observed after the operation is completed to check whether there are any adverse reactions.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An ultrasound-guided nerve block puncture needle, comprising a handheld sleeve mechanism (1), characterized in that: One end of the handheld sleeve mechanism (1) is spirally connected to a threaded cover (2), and a metal puncture needle (3) is installed inside the handheld sleeve mechanism (1); One end of the metal puncture needle (3) is fixedly connected to a connection kit (4), the other end of the connection kit (4) is sleeved with a connection hose (5), and the top of the handheld sleeve mechanism (1) is fixedly connected to an integrated limiting mechanism (6); The hand-held sleeve mechanism (1) is internally provided with a pressing and piercing mechanism (7) slidably connected at one end of the integrated limiting mechanism (6). The pressing and piercing mechanism (7) comprises an inclined square bar (701) slidably connected to one side of the integrated limiting mechanism (6). The bottom of the inclined square bar (701) is fixedly connected to a bottom limiting bar (702). Both left and right end surfaces of the inclined square bar (701) are fixedly connected to side limiting connecting plates (703). The interior of the inclined square bar (701) is slidably connected to a sliding pressing block (704). The bottom of the sliding pressing block (704) and the top of the central notch of the inclined square bar (701) are both provided with a semicircular rubber sleeve (705). The top of the sliding pressing block (704) is fixedly connected to a square connecting plate (703). A block (706) is provided, the top of the square connecting block (706) is fixedly connected to a connecting round rod (707), the top of the outer wall of the connecting round rod (707) is fixedly connected to a sealing top block (708), a first reset spring (709) is fixedly connected between the bottom of the sealing top block (708) and the inside of the inclined square bar (701), a pressing head (710) is fixedly connected to the top of the connecting round rod (707), a sealing baffle (711) and a pointer (712) are respectively fixedly connected to the top of one side of the inclined square bar (701), the left and right sides of the inner wall of the hand-held sleeve mechanism (1) are fixedly connected to a driving reset mechanism (8), and a clamping mechanism (9) is installed inside the hand-held sleeve mechanism (1) on the side away from the threaded cover (2).

2. The ultrasound-guided nerve block puncture needle according to claim 1, characterized in that: The handheld sleeve mechanism (1) comprises a sleeve body (101), one end of the sleeve body (101) is fixedly connected to a needle outlet end cover (102), one side of the top of the sleeve body (101) is fixedly connected to two arc-shaped limit frames (103), a rotation limit plate (104) is fixedly connected between the two ends of the two arc-shaped limit frames (103), and strong permanent magnets (105) are installed inside the two rotation limit plates (104), a bottom limit guide rail (106) is fixedly connected to the inner surface of the bottom of the sleeve body (101), and an integrated limit clamping block (107) is fixedly connected to the inner wall of the sleeve body (101) on both sides of the clamping mechanism (9).

3. The ultrasound-guided nerve block puncture needle according to claim 2, characterized in that: One end of the inner wall of the sleeve body (101) is a threaded structure, and a circular through hole corresponding to the metal puncture needle (3) is provided at the center of the threaded cover (2).

4. The ultrasound-guided nerve block puncture needle according to claim 1, characterized in that: The integrated limiting mechanism (6) comprises an integrated thick plate (601) fixedly connected to the top of the hand-held sleeve mechanism (1), and a storage groove (602) and a limiting sliding groove (603) are respectively provided on two sides of the integrated thick plate (601), and a scale (604) is provided on a side close to the limiting sliding groove (603) at the rear end of the top of the integrated thick plate (601).

5. The ultrasound-guided nerve block puncture needle according to claim 1, characterized in that: The center of the inclined square bar (701) is provided with grooves and through holes corresponding to the sliding pressing block (704), the square connecting block (706), the connecting round rod (707) and the sealing top block (708).

6. The ultrasound-guided nerve block puncture needle according to claim 1, characterized in that: The driving reset mechanism (8) comprises two fixed round blocks (801) fixedly connected to the inner wall of the hand-held sleeve mechanism (1), a supporting round rod (802) fixedly connected between the two fixed round blocks (801), and a second reset spring (803) fixedly connected between the fixed round block (801) at one end of the supporting round rod (802) and the side limit connecting plate (703).

7. The ultrasound-guided nerve block puncture needle according to claim 2, characterized in that: The clamping mechanism (9) comprises a fixed ring plate (901) engaged inside the hand-held sleeve mechanism (1) and an adjustable rotating ring plate (902) rotatably connected inside the hand-held sleeve mechanism (1); a hexagonal notch (903) is provided on one side of the fixed ring plate (901); a plurality of limit sliders (904) are slidably connected to the hexagonal notch (903); a triangular clamping plate (905) is fixedly connected to one side of the plurality of limit sliders (904); a driving round block (906) is fixedly connected to the other side of the plurality of triangular clamping plates (905); a rubber pad (907) is fixedly connected to one side of the bottom of the plurality of triangular clamping plates (905); and an iron shifting block (908) is fixedly connected to the top of the adjustable rotating ring plate (902).

8. The ultrasound-guided nerve block puncture needle according to claim 7, characterized in that: The adjusting rotating ring plate (902) is provided with a plurality of strip-shaped through holes corresponding to the driving round block (906), and a through hole corresponding to the iron shift block (908) is provided on one side of the top of the sleeve body (101).

Images