Auxiliary device for spinal puncture

Abstract

The invention discloses an auxiliary device for spinal puncture. The auxiliary device comprises a needle fixing device, a support and a connecting mechanism. The needle fixing device comprises a handle, a basic frame and a clamp, the basic frame is fixed to one end of the handle, and the clamp is installed on the basic frame and used for clamping a puncture needle; the other end of the handle is mounted on the bracket through a connecting mechanism; the auxiliary device is used in various spinal puncture diagnosis and treatment surgeries, and the using method comprises the steps that the support is placed near a patient, then a puncture needle is fixed to a clamp of a needle fixing device, and then a doctor holds a handle of the needle fixing device to conduct puncture operation; after puncture is completed, the needle fixing device is fixed to the support through the connecting mechanism, so that the puncture needle is fixed, and a doctor can liberate the two hands to operate other medical instruments to conduct following diagnosis and treatment operation.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an auxiliary device for spinal puncture. Background Art

[0002] A spinal puncture is a common clinical procedure. The patient lies in a bent-side position in bed, hugging their knees to create lumbar kyphosis and widen the intervertebral space. Following routine local disinfection and infiltration anesthesia, the physician uses a needle to perform the spinal puncture. During the puncture, the physician typically holds the skin in place with two fingers, while holding the needle in their right hand and inserting it perpendicularly through the skin. The needle passes sequentially through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament, ligamentum flavum, epidural space, arachnoid mater, and subarachnoid space. During this procedure, the physician can feel two distinct periods of resistance: the first indicating needle entry into the epidural space, and the second indicating entry into the subarachnoid space. This sensation of resistance is crucial for determining needle placement. A successful puncture is indicated by the flow of clear cerebrospinal fluid from the needle after core removal. Generally, the needle needs to be inserted 4-6 cm into the puncture for adults and 2-4 cm into the puncture for children.

[0003] After a successful spinal puncture, the doctor performs subsequent procedures based on actual diagnostic and treatment needs, such as measuring cerebrospinal fluid pressure, sampling cerebrospinal fluid, and administering spinal anesthesia. These subsequent diagnostic and treatment procedures are completed by connecting the corresponding medical device to the puncture needle. During this process, the doctor needs to assist in fixing the puncture needle with one hand, partially bearing the weight of other medical devices and reducing the damage to the patient caused by the puncture needle. Therefore, during spinal puncture diagnosis and treatment, the doctor needs to complete many operations with one hand, which is not very convenient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that in the existing technology, the doctor needs to use one hand to assist in fixing the puncture needle, resulting in many other operations that can only be completed with one hand, which is not convenient; and the puncture operation mainly relies on the doctor's hand feeling to control the needle insertion, which has high technical requirements.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: an auxiliary device for spinal puncture, comprising a needle fixator, a bracket and a connecting mechanism;

[0006] The needle holder comprises a handle, a base frame and a clamp, wherein the base frame is fixed to one end of the handle, the clamp is mounted on the base frame, and the clamp is used to clamp the puncture needle; the other end of the handle is mounted on the bracket through a connecting mechanism;

[0007] The auxiliary device of the present invention is used in various spinal puncture diagnosis and treatment operations. The method of use is: place the bracket near the patient, then fix the puncture needle on the clamp of the needle fixing device, and then the doctor holds the handle of the needle fixing device to perform the puncture operation; after the puncture is completed, use the connecting mechanism to fix the needle fixing device on the bracket. At this point, the puncture needle is fixed, and the doctor can free his hands to operate other medical equipment to perform the next diagnosis and treatment operation.

[0008] In the present invention, doctors use a needle holder to perform the needle insertion operation, which is significantly different from doctors' previous operation methods. This is not conducive to doctors using their past manual feel experience to perceive the degree of needle insertion, and may make it difficult to perceive the disappearance of needle insertion resistance. To facilitate doctors using familiar and experienced techniques to perform needle insertion, the present invention also has the following design: the clamp includes a clamp, a first connecting rod, and a first rotating shaft. The clamp and the first rotating shaft are respectively connected to the two ends of the first connecting rod, and the first rotating shaft is hinged to the base frame. The clamp includes two opposing springs, and the middle of the two springs is concave to form an open ring that can clamp the puncture needle. In this design, the clamp is a movable component that can rotate around the first rotating shaft. When using the needle holder, the doctor grasps the handle with his palm and presses his thumb against the needle end of the puncture needle. Due to the rotational nature of the clamp itself, the puncture needle insertion resistance is directly transmitted to the doctor's thumb rather than the handle of the needle holder. This allows the doctor to directly feel the change in needle insertion resistance with his thumb, which conforms to the doctor's traditional needle insertion operation habits and is more easily accepted by doctors.

[0009] Furthermore, the needle holder also includes a digital display assembly, which includes an end cap, a pressure sensor, a second connecting rod, a second rotating shaft and a display screen; the end cap and the second rotating shaft are respectively connected to the two ends of the second connecting rod, the second rotating shaft is hinged to the base frame, a pressure sensor is provided in the end cap, and the display screen is mounted on the base frame, and the display screen displays the measured value of the pressure sensor; when the puncture needle is fixed on the clamp, the end cap can cover the needle tail of the puncture needle. When the doctor uses the needle holder, the end cap covers the needle tail of the puncture needle, and the doctor's thumb presses on the end cap, so the needle insertion resistance of the puncture needle will be transmitted to the pressure sensor in the end cap, which means that the display screen can directly display the needle insertion resistance. The digitally displayed needle insertion resistance can be used as a reference for the doctor's puncture operation. When the puncture needle enters the epidural space and subarachnoid space, the doctor can not only feel the sudden disappearance of the resistance manually, but also observe the sudden drop in pressure value on the display screen.

[0010] Furthermore, the digital display component also includes a laser ranging sensor, which is installed on the basic frame. The ranging direction of the laser ranging sensor is consistent with the direction of the puncture needle; the display screen displays the ranging data of the laser ranging sensor, which is the straight-line distance between the current needle holder and the patient's back. The current needle insertion depth can be known by observing the change value of the ranging data.

[0011] In order to enable the doctor to directly see the needle insertion depth data from the display screen, the display screen processes the distance measurement data of the laser distance measurement sensor and then displays the needle insertion depth;

[0012] Z=LDa

[0013] in:

[0014] Z: needle insertion depth;

[0015] L: length of the puncture needle;

[0016] a: correction coefficient;

[0017] If the calculated Z is a negative value, the needle insertion depth is displayed as 0; the correction coefficient a is related to the specific size of the needle holder and the clamping position of the clamp. The correction coefficient a of each needle holder can be obtained through experiments and then pre-entered into the calculation chip of the display screen.

[0018] Specifically, the connecting mechanism is an electromagnet, a telescopic device is provided on the bracket, and an iron plate is provided on the telescopic rod of the telescopic device; when the puncture operation is completed, the telescopic device is operated to make the iron plate approach and fit the needle fixing device, and then the electromagnet of the connecting mechanism is used to adsorb the needle fixing device on the iron plate, so that the puncture needle stays in the current position.

[0019] During spinal punctures, if the patient is overweight or elderly, resulting in loose skin, the doctor may need to stretch the skin near the puncture site. To facilitate this operation, the auxiliary device of the present invention also includes a stretching assembly, which includes a suction cup, a third connecting rod, and a collar. The suction cup and collar are respectively mounted at each end of the third connecting rod, which is sleeved on a bracket. The third connecting rod can rotate around the collar. There are two stretching assemblies, one above the other. If stretching is required, the third connecting rod is rotated so that the suction cup adheres to the patient's skin near the puncture site, ensuring that the skin near the puncture site is in an extended state. If stretching is not required, the third connecting rod is rotated to the other side, away from the puncture operation area, without affecting the normal puncture operation.

[0020] Beneficial effects: (1) The auxiliary device for spinal puncture of the present invention uses a needle holder to fix the puncture needle in the current position, helping the doctor to free his hands to operate other medical equipment for the next diagnosis and treatment operation, which is beneficial to improving the diagnosis and treatment effect related to spinal puncture. (2) The auxiliary device for spinal puncture of the present invention designs the clamp as a rotatable structure, so that the doctor can use the thumb to directly sense the change of needle insertion resistance, which is in line with the doctor's traditional needle insertion operation habits and is more easily accepted by the doctor. (3) The auxiliary device for spinal puncture of the present invention is provided with a pressure sensor and a laser ranging sensor to measure and display the current needle insertion resistance and needle insertion depth in real time, assisting the doctor to better perform the puncture operation. (4) The auxiliary device for spinal puncture of the present invention is equipped with a traction component to pull and expand the skin of special patients, making it convenient for doctors to perform puncture diagnosis and treatment on various patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the needle fixing device in Example 1.

[0022] Figure 2 yes Figure 1 A magnified view of .

[0023] Figure 3 yes Figure 1 Another perspective of .

[0024] Figure 4 This is a diagram of the state after the needle fixing device in Example 1 clamps the puncture needle.

[0025] Figure 5 yes Figure 4 The status diagram after the end cover is installed.

[0026] Figure 6 This is a structural diagram of the bracket and pulling assembly in Example 1.

[0027] Figure 7 This is an application state diagram of the auxiliary device for assisting spinal puncture in Example 1 (part 1).

[0028] Figure 8 This is the application status diagram of the auxiliary device for assisting spinal puncture in Example 1 (part 2).

[0029] Among them: 100, needle holder; 110, handle; 120, basic frame; 130, clamp; 131, chuck; 132, first connecting rod; 133, first rotating shaft; 200, bracket; 210, telescope; 220, iron plate; 300, connecting mechanism; 400, digital display component; 410, end cover; 420, pressure sensor; 430, second connecting rod; 440, second rotating shaft; 450, display screen; 460, laser ranging sensor; 500, pulling component; 510, suction cup; 520, third connecting rod; 530, collar; 600, puncture needle. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 6 As shown, the auxiliary device for spinal puncture in this embodiment includes a needle fixing device 100 , a bracket 200 , a connecting mechanism 300 , a digital display component 400 and a pulling component 500 .

[0033] like Figures 1 to 3 As shown, the needle holder 100 includes a handle 110, a base frame 120 and a clamp 130. The base frame 120 is fixed to one end of the handle 110, and the clamp 130 is installed on the base frame 120. The clamp 130 is used to clamp the puncture needle 600; a connecting mechanism 300 is installed at the other end of the handle 110. This embodiment uses an electromagnet as the connecting mechanism 300.

[0034] like Figure 2 As shown, the clamp 130 includes a clamp 131, a first connecting rod 132 and a first rotating shaft 133. The clamp 131 and the first rotating shaft 133 are respectively connected to the two ends of the first connecting rod 132. The first rotating shaft 133 is hinged to the base frame 120. The clamp 131 includes two opposite spring pieces. The middle parts of the two spring pieces are concave to form an open ring that can clamp the puncture needle 600. The state of the clamp 130 after clamping the puncture needle 600 is as shown in FIG. Figure 4 In this embodiment, the clamp 130 is a movable component, and the clamp 130 can rotate around the first rotation axis 133 .

[0035] like Figure 2 As shown, the digital display assembly 400 includes an end cap 410, a pressure sensor 420, a second connecting rod 430, a second rotating shaft 440, a display screen 450, and a laser ranging sensor 460. The end cap 410 and the second rotating shaft 440 are respectively connected to the two ends of the second connecting rod 430, and the second rotating shaft 440 is hinged to the base frame 120. The pressure sensor 420 is set in the end cap 410, and the display screen 450 is installed on the base frame 120. The display screen 450 displays the measured value of the pressure sensor 420. Figure 4 and Figure 5 As shown, when the puncture needle 600 is fixed on the clamp 130 , the end cap 410 can cover the needle tail of the puncture needle 600 .

[0036] like Figure 3 As shown, the laser distance measuring sensor 460 is mounted on the base frame 120. The distance measuring direction of the laser distance measuring sensor 460 is consistent with the direction of the puncture needle 600. The display screen 450 displays the distance measuring data of the laser distance measuring sensor 460, which is the straight-line distance between the current needle fixing device 100 and the patient's back. In order to allow the doctor to directly see the needle insertion depth data on the display screen 450, the display screen 450 processes the distance measuring data of the laser distance measuring sensor 460 and displays the needle insertion depth.

[0037] Z=LDa

[0038] in:

[0039] Z: needle insertion depth;

[0040] L: length of the puncture needle 600;

[0041] a: correction coefficient;

[0042] If the calculated Z is a negative value, the needle insertion depth is displayed as 0; the correction coefficient a is related to the specific size of the needle fixing device 100 and the clamping position of the clamp 130. The correction coefficient a of each needle fixing device 100 can be obtained through experiments and then pre-entered into the calculation chip of the display screen 450.

[0043] like Figure 6 As shown, a telescope 210 is provided on the bracket 200, and an iron plate 220 is provided on the telescopic rod of the telescope 210; the pulling assembly 500 includes a suction cup 510, a third connecting rod 520 and a ring 530, the suction cup 510 and the ring 530 are respectively installed at both ends of the third connecting rod 520, the ring 530 is sleeved on the bracket 200, and the third connecting rod 520 can rotate around the ring 530, and the number of the pulling assemblies 500 is two, distributed up and down.

[0044] The method of using the auxiliary device for spinal puncture in this embodiment is:

[0045] (1) Figure 7 As shown, the patient lies on his side with his back bent, and the bracket 200 is placed near the puncture point on the patient's back;

[0046] (2) Figure 4 As shown, the puncture needle 600 is fixed on the fixture 130, and the doctor holds the handle 110 of the needle fixing device 100 with four fingers and palms. If the doctor chooses to enable the digital display component 400, the Figure 5As shown, cover the end cap 410 on the needle tail of the puncture needle 600, and then place the thumb on the end cap 410; if the doctor does not want to activate the digital display assembly 400, then Figure 4 As shown, the thumb is directly extended to press against the tail of the puncture needle 600;

[0047] (3) Figure 7 As shown, the puncture needle 600 on the needle fixing device 100 is aligned with the puncture point on the patient's back, and the needle is inserted perpendicularly into the skin to perform the puncture operation. During this process, the display screen 450 will display the needle insertion resistance and needle insertion depth in real time for the doctor's reference;

[0048] (4) After successful puncture Figure 8 As shown, the iron plate 220 on the telescopic device 210 is pushed out, and the needle fixing device 100 is adsorbed on the iron plate 220 by the electromagnet, so that the needle fixing device 100 and the puncture needle 600 stay at the current position.

[0049] (5) Other diagnostic and treatment operations performed by the doctor after puncture, such as measuring cerebrospinal fluid pressure, sampling cerebrospinal fluid, etc.

[0050] like Figure 7 As shown, if the patient's skin is loose and wrinkled, the suction cup 510 of the pulling assembly 500 can be used to suck the skin to help pull and flatten the skin near the puncture point. If there is no need for pulling, the third connecting rod 520 is rotated to the other side away from the puncture operation area without affecting the normal puncture operation.

[0051] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the scope of protection of the present invention. Various omissions, substitutions and changes without departing from the scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary device for spinal puncture, characterized in that: It comprises a needle fixing device (100), a bracket (200) and a connecting mechanism (300); The needle fixing device (100) includes a handle (110), a base frame (120) and a clamp (130), wherein the base frame (120) is fixed to one end of the handle (110), the clamp (130) is mounted on the base frame (120), and the clamp (130) is used to clamp the puncture needle; the other end of the handle (110) is mounted on the bracket (200) through a connecting mechanism (300).

2. The auxiliary device for spinal puncture according to claim 1, characterized in that: The clamp (130) comprises a clamp (131), a first connecting rod (132) and a first rotating shaft (133), wherein the clamp (131) and the first rotating shaft (133) are respectively connected to the two ends of the first connecting rod (132), and the first rotating shaft (133) is hinged to the base frame (120).

3. The auxiliary device for spinal puncture according to claim 2, characterized in that: The clamp (131) comprises two opposing spring pieces, the middle parts of which are concave to form an open circular ring capable of clamping the puncture needle.

4. The auxiliary device for spinal puncture according to claim 1, characterized in that: The needle fixing device (100) further includes a digital display assembly (400), the digital display assembly (400) including an end cover (410), a pressure sensor (420), a second connecting rod (430), a second rotating shaft (440) and a display screen (450); the end cover (410) and the second rotating shaft (440) are respectively connected to the two ends of the second connecting rod (430), the second rotating shaft (440) is hinged to the base frame (120), the end cover (410) is provided with a pressure sensor (420), the display screen (450) is mounted on the base frame (120), and the display screen (450) displays the measured value of the pressure sensor (420); When the puncture needle is fixed on the clamp (130), the end cap (410) can cover the needle tail of the puncture needle.

5. The auxiliary device for spinal puncture according to claim 4, characterized in that: The digital display assembly (400) further comprises a laser distance measuring sensor (460), which is mounted on the base frame (120). The distance measuring direction of the laser distance measuring sensor (460) is consistent with the direction of the puncture needle; the display screen (450) displays the distance measuring data of the laser distance measuring sensor (460).

6. The auxiliary device for spinal puncture according to claim 5, characterized in that: The display screen (450) processes the distance measurement data of the laser distance measurement sensor (460) and displays the needle insertion depth; Z=LDa in: Z: needle insertion depth; L: length of the puncture needle; a: correction coefficient; If the calculated Z value is negative, the needle depth is displayed as 0.

7. The auxiliary device for spinal puncture according to claim 1, characterized in that: The connecting mechanism (300) is an electromagnet.

8. The auxiliary device for spinal puncture according to claim 8, characterized in that: The bracket (200) is provided with a telescopic device (210), the telescopic rod of the telescopic device (210) is provided with an iron plate (220), and the needle fixing device (100) is adsorbed on the iron plate (220) by the electromagnet of the connecting mechanism (300).

9. The auxiliary device for spinal puncture according to claim 1, characterized in that: The invention also includes a pulling assembly (500), wherein the pulling assembly (500) includes a suction cup (510), a third connecting rod (520) and a collar (530), wherein the suction cup (510) and the collar (530) are respectively installed at two ends of the third connecting rod (520), and the collar (530) is sleeved on the bracket (200).

10. The auxiliary device for spinal puncture according to claim 9, characterized in that: There are two pulling components (500), which are distributed vertically.

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