An ultrasound-guided intravertebral anesthesia assisting device

Abstract

The application relates to the technical field of medical equipment, and discloses an ultrasonic-guided intraspinal anesthesia auxiliary device, which comprises a deformation locking mechanism and a threaded limiting mechanism, and the structure comprises a threaded sleeve capable of longitudinally moving and sleeved on the periphery of an external sleeve through a threaded structure, an external mounting ring capable of rotating and sleeved on the periphery of the threaded sleeve, and an arc-shaped thrust plate capable of longitudinally moving with the external mounting ring and limiting the depth of a needle. The ultrasonic-guided intraspinal anesthesia auxiliary device can control the injection depth of an anesthesia injector according to actual needs, so that the anesthetic can be accurately injected to the required depth, and the difficulty of operating the anesthesia injector by a doctor is reduced, and the function of injection depth auxiliary positioning is achieved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an ultrasound-guided spinal anesthesia aid device. Background Technology

[0002] Spinal anesthesia involves injecting anesthetic drugs into the subarachnoid or epidural space of the spinal canal, blocking the spinal nerve roots and producing anesthesia in the corresponding area innervated by those nerve roots. Spinal anesthesia is a commonly used method for lower abdominal and lower limb surgeries. Traditional spinal anesthesia relies on anatomical localization to determine the puncture point and the anesthesiologist's experience to ensure the correct placement of the catheter.

[0003] In reality, doctors need to operate with both hands simultaneously. One hand controls the movement of the ultrasound probe to display the optimal operating path, while the other hand controls the anesthetic syringe to inject the anesthetic. During the injection of the anesthetic, the depth of needle insertion directly affects the anesthetic effect. Because both hands need to operate the equipment simultaneously, the needle may be inserted too deeply or too shallowly, resulting in errors in insertion accuracy. This leads to suboptimal anesthetic effects, increases the difficulty of anesthetic injection, and extends the operation time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an ultrasound-guided spinal anesthesia aid device that can control the injection depth of the anesthetic syringe according to actual needs, ensuring that the anesthetic agent can be accurately injected to the required depth. At the same time, it reduces the difficulty for doctors to operate the anesthetic syringe and plays a role in assisting in injection depth positioning, thus solving the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultrasound-guided spinal anesthesia auxiliary device, comprising a deformable locking mechanism, the structure of which includes an outer sleeve that can be locked around the anesthetic syringe and has a hollow internal structure, multiple elastic air films disposed inside the outer sleeve and capable of being locked on the outer surface of the anesthetic syringe, and an external thread structure disposed on the outer circumference of the outer sleeve, and a threaded limiting mechanism, the structure of which includes a threaded sleeve that is sleeved around the outer sleeve through the threaded structure and is capable of longitudinal movement, an outer mounting ring that is sleeved around the threaded sleeve and is capable of rotation, and an arc-shaped thrust plate that can move longitudinally with the outer mounting ring and limit the depth of the needle tip.

[0006] Preferably, the deformable locking mechanism further includes a limiting protrusion ring integrally disposed at the bottom and top of the outer sleeve, the external thread structure integrally disposed on the outer circumferential surface of the outer sleeve, the inner side of the outer sleeve is provided with a syringe insertion cavity with an open top, the bottom end of the outer sleeve is provided with a component through hole communicating with the syringe insertion cavity, the outer sleeve is provided with a plurality of annular array-arranged fan-shaped cavities around the syringe insertion cavity, the inner side of the outer sleeve is provided with a medium flow hole communicating with each fan-shaped cavity, a fan-shaped embedding groove is provided at the intersection of each fan-shaped cavity and the syringe insertion cavity, a deformable elastic gas film is embedded in each fan-shaped embedding groove, and the top of the outer sleeve is provided with a curved channel communicating with the top of the fan-shaped cavity.

[0007] Preferably, the structural radius of the syringe insertion cavity is adapted to the outer ring structural radius of the anesthetic syringe.

[0008] Preferably, the threaded limiting mechanism further includes an internal thread cavity disposed at the center of the threaded sleeve and installed on the periphery of the outer sleeve via a threaded structure. The center of the outer mounting ring is provided with a component mounting port with open ends. The component mounting port of the outer mounting ring is installed on the periphery of the lower half of the threaded sleeve via a bearing. Three axial connecting rods arranged in a ring array are fixedly installed at the bottom of the outer mounting ring. A planar connecting plate integrally formed with the top periphery of the arc-shaped thrust plate is provided. The top of the planar connecting plate is installed on the bottom of the axial connecting rods. A needle insertion cylinder integrally formed with the center of the upward concave surface of the arc-shaped thrust plate is provided. The needle insertion cylinder and the interior of the arc-shaped thrust plate are provided with needle insertion holes with open ends.

[0009] Preferably, the top and bottom ends of the needle insertion hole are provided with rounded corner structures to reduce the lateral shear force on the outer wall of the needle.

[0010] Preferably, the arc-shaped thrust plate has a hemispherical structure with a convex bottom and a concave top.

[0011] Preferably, it also includes a manual pressure control mechanism, the structure of which includes a hollow shell installed at the port of the curved channel and having a hollow internal structure, a piston plate placed inside the hollow shell and capable of indirectly generating a deformation force on the elastic gas film, and a helical spring generating an elastic force on the piston plate.

[0012] Preferably, the manual pressure control mechanism further includes a media storage cavity disposed inside the hollow shell. One end of the hollow shell is provided with a docking channel integrally formed with it and installed at the curved channel port. The other end of the hollow shell is provided with a rod through hole. The media storage cavity is provided with a piston plate that can move along its axial direction. A movable rod passing through the rod through hole is installed on the end face of the piston plate facing the rod through hole. A helical spring in a compressed state is sleeved around the rod body located inside the media storage cavity. A force application plate is fixedly installed on one end of the movable rod.

[0013] Preferably, the enclosed area formed by the piston plate, the medium storage cavity, the docking channel, the curved channel, the fan-shaped cavity, the medium flow hole, and the elastic gas film is filled with buffer solution.

[0014] Compared with the prior art, the present invention provides an ultrasound-guided spinal anesthesia aid device, which has the following beneficial effects:

[0015] It can control the injection depth of the anesthetic syringe according to actual needs, so as to ensure that the anesthetic can be accurately injected to the required depth. At the same time, it reduces the difficulty for doctors to operate the anesthetic syringe and plays a role in assisting in injection depth positioning. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a three-dimensional cross-sectional view of the present invention;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the deformation locking mechanism in this invention from a first perspective.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the deformable locking mechanism in this invention from a second perspective.

[0020] Figure 5 This is a perspective view of the threaded limiting mechanism in this invention;

[0021] Figure 6 This is a three-dimensional cross-sectional view of the threaded limiting mechanism in this invention;

[0022] Figure 7 This is a perspective view of the manual pressure control mechanism in this invention;

[0023] Figure 8 This is a three-dimensional cross-sectional view of the manual pressure control mechanism in this invention.

[0024] The components include: 1. Deformation locking mechanism; 11. Outer sleeve; 12. Limiting protrusion ring; 13. Syringe insertion cavity; 14. Component perforation; 15. Fan-shaped cavity; 16. Fan-shaped embedding groove; 17. Medium flow hole; 18. Elastic gas film; 19. Curved channel; 110. External thread structure; 2. Threaded limiting mechanism; 21. Threaded sleeve; 22. Internal thread cavity; 23. Outer mounting ring; 24. Component mounting port; 25. Axial connecting rod; 26. Arc-shaped thrust plate; 27. Flat connecting plate; 28. Needle insertion cylinder; 29. ​​Needle insertion hole; 3. Manual pressure control mechanism; 31. Hollow outer shell; 32. Medium storage cavity; 33. Docking channel; 34. Rod perforation; 35. Piston plate; 36. Movable rod; 37. Helical spring; 38. Force application plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1 and Figure 2 An ultrasound-guided spinal anesthesia aid device, which is made of appropriate medical materials and has sterilization capabilities.

[0027] To achieve insertion locking of the anesthetic syringe, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A deformation-type locking mechanism 1 is required, which includes an outer sleeve 11 that can be locked around the anesthetic syringe and has a hollow internal structure, multiple elastic air membranes 18 disposed inside the outer sleeve 11 and locked to the outer surface of the anesthetic syringe, and an external thread structure 110 disposed on the outer circumferential surface of the outer sleeve 11. The lower half of the syringe barrel is inserted into the syringe insertion cavity 13, and the bottom of the anesthetic syringe is pressed against the bottom surface of the syringe insertion cavity 13. Then, the outward side of the elastic air membrane 18 is subjected to the force of the buffer solution. At this time, the elastic air membrane 18 will deform inward until the inner side of the elastic air membrane 18 presses against the outer circumferential surface of the anesthetic syringe with a rated pressure, thereby locking the anesthetic syringe.

[0028] For the specific structure of the deformation locking mechanism 1, please refer to [link / reference]. Figure 3 and Figure 4It also includes a limiting protrusion ring 12 integrally disposed at the bottom and top of the outer sleeve 11. The external thread structure 110 is integrally disposed on the outer circumferential surface of the outer sleeve 11. The outer sleeve 11 is provided with a syringe insertion cavity 13 with an open top. The bottom of the outer sleeve 11 is provided with a component through hole 14 connecting the syringe insertion cavity 13. The outer sleeve 11 is provided with a plurality of annular array-arranged fan-shaped cavities 15 around the syringe insertion cavity 13. The outer sleeve 11 is provided with a medium flow hole 17 connecting each fan-shaped cavity 15. A fan-shaped embedding groove 16 is provided at the intersection of each fan-shaped cavity 15 and the syringe insertion cavity 13. A deformable elastic gas membrane 18 is embedded in each fan-shaped embedding groove 16. The top of the outer sleeve 11 is provided with a curved channel 19 connecting the top of the fan-shaped cavity 15. The structural radius of the syringe insertion cavity 13 is adapted to the outer ring structural radius of the anesthetic syringe.

[0029] To achieve depth control of the injection needle, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 6 A threaded limiting mechanism 2 is required. Its structure includes a threaded sleeve 21 that is threaded around the outer sleeve 11 and can move longitudinally; an outer mounting ring 23 that is rotatable and is fitted around the threaded sleeve 21; and an arc-shaped thrust plate 26 that moves longitudinally with the outer mounting ring 23 and limits the depth of the needle. Rotating the upper half of the threaded sleeve 21 causes longitudinal movement due to the threaded connection, which in turn moves the outer mounting ring 23 and the arc-shaped thrust plate 26 longitudinally. This changes the distance between the arc-shaped thrust plate 26 and the bottom of the injection needle, which is the injection depth. Medical personnel can adjust this depth as needed to control the depth of the injection needle. When the injection needle is inserted to the required depth, the arc-shaped thrust plate 26 restricts the patient's skin to prevent the needle from moving further downwards. The hemispherical arc-shaped thrust plate 26 facilitates the adjustment of the needle angle by medical personnel, reducing the restriction on needle angle adjustment.

[0030] For details regarding the specific structure of the threaded limiting mechanism 2, please refer to [link / reference]. Figure 5 and Figure 6It also includes an internal threaded cavity 22 located at the center of the threaded sleeve 21 and installed on the periphery of the outer sleeve 11 via a threaded structure. The outer mounting ring 23 has a component mounting port 24 with open ends at its center. The component mounting port 24 of the outer mounting ring 23 is installed on the periphery of the lower half of the threaded sleeve 21 via a bearing. Three axial connecting rods 25 arranged in a ring array are fixedly installed at the bottom of the outer mounting ring 23. The top periphery of the arc-shaped thrust plate 26 is provided with a planar connecting plate 2 integrally formed with it. 7. The top of the planar connecting plate 27 is installed at the bottom of the axial connecting rod 25. The center of the upward concave surface of the arc-shaped thrust plate 26 is provided with a needle insertion cylinder 28 integrally formed with it. The needle insertion cylinder 28 and the arc-shaped thrust plate 26 are provided with needle insertion holes 29 with open ends. The top and bottom ends of the needle insertion holes 29 are provided with rounded corner structures to reduce the lateral shear force on the outer wall of the needle. The arc-shaped thrust plate 26 has a hemispherical structure with an outward convex bottom and an inward concave top.

[0031] To implement control over the locked and unlocked states, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A manual pressure control mechanism 3 needs to be set up. Its structure includes a hollow shell 31 installed at the port of the curved channel 19 and having a hollow internal structure, a piston plate 35 placed inside the hollow shell 31 and capable of indirectly generating deformation force on the elastic gas membrane 18, and a spiral spring 37 generating elastic force on the piston plate 35. When the force plate 38 is pulled outward, the piston plate 35 contacts the pressure on the buffer solution, and the buffer solution will simultaneously release the pressure on the elastic gas membrane 18. At this time, it is convenient to insert the anesthesia syringe. After the anesthesia syringe is inserted, the pulling force on the force plate 38 is released. Under the elastic force of the spiral spring 37, the piston plate 35 generates pressure on the buffer solution again. This pressure will act on the outer surface of the elastic gas membrane 18, thereby realizing the control function of locking and unlocking the state.

[0032] For details regarding the specific structure of the manual pressure control mechanism 3, please refer to [link / reference]. Figure 7 and Figure 8It also includes a media storage cavity 32 disposed inside the hollow shell 31. One end of the hollow shell 31 is provided with a docking channel 33 integrally formed with it and installed at the port of the curved channel 19. The other end of the hollow shell 31 is provided with a rod through hole 34. The inside of the media storage cavity 32 is provided with a piston plate 35 that can move along its axial direction. The piston plate 35 has a movable rod 36 that passes through the rod through hole 34 installed on the end face of the piston plate 35 facing the rod through hole 34. The movable rod 36 has a coil spring 37 in a compressed state sleeved around the rod body located inside the media storage cavity 32. One end of the movable rod 36 is fixedly installed with a force plate 38. The closed area formed by the piston plate 35, the media storage cavity 32, the docking channel 33, the curved channel 19, the fan-shaped cavity 15, the media flow hole 17 and the elastic gas film 18 is filled with buffer solution.

[0033] In use, pull the force plate 38 outward. At this time, the piston plate 35 contacts the pressure on the buffer solution, and the buffer solution simultaneously releases the pressure on the elastic gas membrane 18. Then, insert the lower half of the syringe barrel into the syringe insertion cavity 13, and make the bottom of the syringe abut against the bottom surface of the syringe insertion cavity 13. After the insertion of the anesthetic syringe is completed, release the pulling force on the force plate 38. Under the elastic force of the coil spring 37, the piston plate 35 re-applies pressure to the buffer solution. This pressure acts on the outer surface of the elastic gas membrane 18. At this time, the elastic gas membrane 18 will deform inward until the elastic gas membrane 18... The inner side of the needle contacts the outer circumference of the anesthetic syringe with rated pressure to lock the syringe. The upper half of the threaded sleeve 21 is rotated in a directional manner. Due to the threaded connection, the rotating threaded sleeve 21 will move longitudinally, thereby driving the outer mounting ring 23 and the arc-shaped thrust plate 26 to move longitudinally. At this time, the distance between the arc-shaped thrust plate 26 and the bottom of the injection needle changes. This distance is the injection depth. Medical staff can adjust this depth according to actual needs to achieve depth control of the injection needle. When the injection needle is inserted to the injection depth, the arc-shaped thrust plate 26 will restrict the patient's skin to prevent the injection needle from moving further downward.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrasound-guided spinal anesthesia aid device, characterized in that: include, The deformable locking mechanism (1) includes an outer sleeve (11) that can be locked around the anesthetic syringe and has a hollow structure, multiple elastic air films (18) that are disposed inside the outer sleeve (11) and can be locked on the outer surface of the anesthetic syringe, and an external thread structure (110) disposed on the outer circumference of the outer sleeve (11). And a threaded limiting mechanism (2), the structure of which includes a threaded sleeve (21) that is sleeved around the outer sleeve (11) and can move longitudinally, an outer mounting ring (23) that is sleeved around the threaded sleeve (21) and can rotate, and an arc-shaped thrust plate (26) that can move longitudinally with the outer mounting ring (23) and limit the depth of the needle.

2. The ultrasound-guided spinal anesthesia aid device according to claim 1, characterized in that: The deformation locking mechanism (1) further includes a limiting protrusion ring (12) integrally disposed at the bottom and top of the outer sleeve (11). The external thread structure (110) is integrally disposed on the outer circumferential surface of the outer sleeve (11). The outer sleeve (11) has a syringe insertion cavity (13) with an open top. The bottom of the outer sleeve (11) has a component through hole (14) communicating with the syringe insertion cavity (13). The outer sleeve (11) is located outside the syringe insertion cavity (13). The outer sleeve (11) is provided with a plurality of annular array of fan-shaped cavities (15). The inner part of the outer sleeve (11) is provided with a medium flow hole (17) connecting each fan-shaped cavity (15). A fan-shaped embedding groove (16) is provided at the junction of each fan-shaped cavity (15) and the syringe insertion cavity (13). A deformable elastic gas film (18) is embedded in each fan-shaped embedding groove (16). A curved channel (19) connecting the top of the fan-shaped cavity (15) is provided at the top of the outer sleeve (11).

3. The ultrasound-guided spinal anesthesia aid device according to claim 2, characterized in that: The structural radius of the syringe insertion cavity (13) is adapted to the outer ring structural radius of the anesthetic syringe.

4. The ultrasound-guided spinal anesthesia aid device according to claim 3, characterized in that: The threaded limiting mechanism (2) further includes an internal thread cavity (22) located at the center of the threaded sleeve (21) and installed on the periphery of the outer sleeve (11) via a threaded structure. The center of the outer mounting ring (23) is provided with a component mounting port (24) with open ends. The component mounting port (24) of the outer mounting ring (23) is installed on the periphery of the lower half of the threaded sleeve (21) via a bearing. The bottom of the outer mounting ring (23) is fixedly installed with three axial connecting rods (25) arranged in a ring array. The top periphery of the arc-shaped thrust plate (26) is provided with a planar connecting plate (27) integral with it. The top of the planar connecting plate (27) is installed on the bottom of the axial connecting rod (25). The center of the upward concave surface of the arc-shaped thrust plate (26) is provided with a needle insertion cylinder (28) integral with it. The needle insertion cylinder (28) and the arc-shaped thrust plate (26) are provided with needle insertion holes (29) with open ends.

5. The ultrasound-guided spinal anesthesia aid device according to claim 4, characterized in that: The top and bottom ends of the needle insertion hole (29) are provided with rounded corner structures to reduce the lateral shear force on the outer wall of the needle.

6. The ultrasound-guided spinal anesthesia aid device according to claim 5, characterized in that: The arc-shaped thrust plate (26) has a hemispherical structure with a convex bottom and a concave top.

7. An ultrasound-guided spinal anesthesia aid device according to any one of claims 2-6, characterized in that: It also includes a manual pressure control mechanism (3), the structure of which includes a hollow shell (31) installed at the port of the curved channel (19) and having a hollow internal structure, a piston plate (35) placed inside the hollow shell (31) and capable of indirectly generating deformation force on the elastic gas film (18), and a helical spring (37) generating elastic force on the piston plate (35).

8. The ultrasound-guided spinal anesthesia aid device according to claim 7, characterized in that: The manual pressure control mechanism (3) also includes a media storage cavity (32) disposed inside the hollow shell (31). One end of the hollow shell (31) is provided with a docking channel (33) integral with it and installed at the port of the curved channel (19). The other end of the hollow shell (31) is provided with a rod through hole (34). The inside of the media storage cavity (32) is provided with a piston plate (35) that can move along its axial direction. The piston plate (35) has a movable rod (36) that passes through the rod through hole (34) installed on the end face of the piston plate (35) facing the rod through hole (34). The movable rod (36) has a coil spring (37) in a compressed state sleeved around the rod body located inside the media storage cavity (32). One end of the movable rod (36) is fixedly installed with a force plate (38).

9. The ultrasound-guided spinal anesthesia aid device according to claim 8, characterized in that: The closed area formed by the piston plate (35), medium storage cavity (32), docking channel (33), curved channel (19), fan-shaped cavity (15), medium flow hole (17) and elastic gas film (18) is filled with buffer solution.

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