Improved intravertebral puncture body position placing device

By designing and improving the positioning device for spinal puncture, and utilizing an adjustable telescopic arm and an adjustable lower limb pad, the problem of difficult positioning during spinal puncture in parturient women was solved, the success rate of puncture was improved, the risk of nerve damage was reduced, and the safety and comfort of patients were enhanced.

CN224671770UActive Publication Date: 2026-08-25NANJING MATERNITY & CHILD HEALTH CARE HOSPITAL
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Patent Information

Application Number
CN202522080565.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-27
Publication Date
2026-08-25
Estimated Expiration
2035-09-27

AI Technical Summary

Technical Problem

During epidural puncture, the difficulty in positioning the mother, pain causing movement, increases the risk of puncture, and the lack of a sense of security leads to a high failure rate and risk of nerve damage.

Method used

An improved spinal canal puncture positioning device is designed, including an adjustable telescopic arm, a supporting forearm and a supporting posterior arm, equipped with an adjustable lower limb pad and a grippable handle, which can achieve precise positioning through individualized adjustment, increasing patient comfort and safety.

Benefits of technology

It improves the success rate of spinal canal puncture, reduces the risk of nerve damage, enhances the safety and comfort of patient positioning, and reduces the possibility of puncture failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of improved intraspinal puncture body position arrangement device, it is related to obstetric equipment field, including adjustable telescopic arm, support forearm and support rear arm, wherein, support forearm and support rear arm are respectively arranged at the both ends of adjustable telescopic arm, handle is provided on support forearm, support rear arm is hinged with lower limb pad, the bottom of support forearm and support rear arm is provided with fixator, the utility model provides more accurate body position arrangement by adjustable adjustable telescopic arm, angle-adjustable lower limb pad and grippable handle, individual adjustment is carried out according to patient height, weight, lower limb flexion degree and other factors, effectively fix the body position of patient, the intraspinal puncture body position of puerpera, obesity and elderly patient is effectively placed, not only can increase the success rate of puncture, simultaneously also can reduce patient nerve injury risk, increase the safety and comfort of patient body position arrangement time, better guarantee patient safety.
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Description

Technical Field

[0001] This utility model relates to the field of obstetric equipment technology, and in particular to an improved spinal canal puncture positioning device. Background Technology

[0002] Spinal puncture is a crucial technique for achieving labor analgesia or cesarean section anesthesia during childbirth. Patient positioning is one of the key factors for a successful spinal puncture. (See attached instruction manual.) Figure 4 The diagram shows the positioning for spinal puncture. However, positioning the mother for spinal puncture faces many challenges: ① The physiological changes caused by the expansion of the abdomen make positioning difficult; ② During labor analgesia, the mother usually experiences intense pain, which can cause her to move during the puncture, increasing the risk of injury; ③ During spinal puncture, the patient's back is required to move to the edge of the operating table, leaving her without hand grip support, resulting in a lack of security and a risk of falling off the bed.

[0003] Currently, most patients require assistance from nurses or doctors to position themselves during spinal punctures. The accuracy of this positioning varies, increasing the workload for medical staff. Incorrect positioning leads to unclear exposure of the intervertebral space, significantly increasing the chance of puncture failure, especially in obese patients. Incorrect positioning can cause spinal displacement, and blind puncture can easily lead to needle deviation, affecting not only the effectiveness of analgesia or anesthesia but also potentially increasing the risk of nerve damage, seriously impacting postoperative recovery and long-term prognosis. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to provide an improved spinal canal puncture positioning device, which increases the success rate of puncture, reduces the risk of nerve damage to patients, increases the safety and comfort of patients during positioning, and better protects patient safety.

[0006] To achieve the above objectives, this utility model proposes an improved positioning device for spinal canal puncture, comprising an adjustable telescopic arm, a supporting forearm, and a supporting rear arm. The supporting forearm and supporting rear arm are respectively located at both ends of the adjustable telescopic arm. The supporting forearm is provided with a handle, and the supporting rear arm is hinged with a lower limb pad. Fixers are provided at the bottom of both the supporting forearm and the supporting rear arm.

[0007] Furthermore, a threaded hole is provided at the top of the supporting rear arm, and a locking screw is provided inside the threaded hole. A locking hinge is fitted on the shaft of the locking screw. One side of the locking hinge is connected to the lower limb pad. A locking tooth is provided at the bottom of the locking hinge, and a fixing tooth is provided at the top of the threaded hole. The fixing tooth and the locking tooth mesh with each other.

[0008] Furthermore, a soft pad is provided on the inner side of the lower limb pad.

[0009] Furthermore, the adjustable telescopic arm is provided with a locking screw for locking its telescopic length.

[0010] Furthermore, a connecting block is provided between the supporting forearm and the adjusting telescopic arm.

[0011] Beneficial effects: This utility model provides more precise body positioning through an adjustable telescopic arm, an adjustable lower limb pad, and a grippable handle. It allows for individualized adjustments based on factors such as the patient's height, weight, and lower limb flexion degree, effectively positioning the patient for spinal puncture in postpartum women and obese patients. This not only increases the success rate of puncture but also reduces the risk of nerve damage, enhancing the safety and comfort of the patient during positioning and better ensuring patient safety.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 This is a schematic diagram of the structure of an improved spinal canal puncture positioning device according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the improved spinal canal puncture positioning device according to an embodiment of the present invention from another perspective.

[0016] Figure 3 This is a schematic diagram of the locking hinge in an improved spinal canal puncture positioning device according to an embodiment of the present invention.

[0017] Figure 4 This is a diagram showing the patient positioning for spinal canal puncture in existing techniques.

[0018] As shown in the figure: 1. Adjustable telescopic arm; 11. Locking screw; 2. Support forearm; 21. Connecting block; 3. Handle; 4. Fixing device; 5. Lower limb pad; 51. Soft pad; 52. Locking hinge; 521. Locking tooth; 53. Rotating hinge; 6. Locking screw; 7. Support for rear arm; 71. Threaded hole; 72. Fixing tooth. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] The improved spinal canal puncture positioning device of this utility model embodiment will be described below with reference to the accompanying drawings.

[0021] like Figures 1-4 As shown, the improved spinal canal puncture positioning device provided in this embodiment includes an adjustable telescopic arm 1, a supporting forearm 2, and a supporting rear arm 7. The supporting forearm 2 and the supporting rear arm 7 are respectively located at both ends of the adjustable telescopic arm 1. The supporting forearm 2 is provided with a handle 3, and the supporting rear arm 7 is hinged with a lower limb pad 5. Fixers 4 are provided at the bottom of both the supporting forearm 2 and the supporting rear arm 7.

[0022] Specifically, when using the positioning device of this application, the fixator 4 provided by this device is fixed next to the operating table or operating table. The patient is in a left lateral decubitus position, facing this device, with the back close to the edge of the bed and fully exposed. The spine is positioned in a flexed position. The telescopic arm 1 is adjusted according to the patient's height, and the lower limb pad 5 is adjusted according to the degree of lower limb flexion. The lower limb is fixed on the soft pad of the lower limb pad 5. The patient is instructed to lower their head and hold the handle 3 with their hands to fix the patient in the optimal spinal flexion position for puncture.

[0023] During placement, the telescopic arm is adjusted to a comfortable length based on the patient's height. The anesthesiologist locates the puncture point by palpating the patient's back, adjusts the angle of the lower limb pad to 5 degrees according to the patient's condition, instructs the patient to hold the gripper, lower their head, and adjust to the optimal position for spinal canal puncture. Subsequently, disinfection and draping are performed, and the spinal canal puncture procedure begins.

[0024] This device effectively positions pregnant women and obese patients for spinal puncture, which not only increases the success rate of puncture but also reduces the risk of nerve damage, increases the safety and comfort of patient positioning, and better protects patient safety.

[0025] In one embodiment of this utility model, such as Figure 3As shown, a threaded hole 71 is provided at the top of the supporting rear arm 7, and a locking screw 6 is provided inside the threaded hole 71. A locking hinge 52 is sleeved on the body of the locking screw 6. One side of the locking hinge 52 is connected to one end of the lower limb pad 5, and the other end of the lower limb pad 5 is rotatably connected to the supporting rear arm 7 through a rotating hinge 53. A locking tooth 521 is provided at the bottom of the locking hinge 52, and a fixing tooth 72 is provided at the top of the threaded hole 71. The fixing tooth 72 and the locking tooth 521 mesh with each other.

[0026] Specifically, when it is necessary to adjust the support angle of the lower limb pad 5, loosening the locking screw 6 causes the lower limb pad 5 to move upward due to its own deformation recovery force, thereby separating the locking tooth 521 from the fixing tooth 72. At this time, the lower limb pad 5 can rotate freely to adjust the angle. When it is necessary to fix the support angle of the lower limb pad 5, tightening the locking screw 6 causes the locking hinge 52 to move downward, thereby engaging the locking tooth 521 with the fixing tooth 72. At this time, the locking hinge 52 rotates and locks, thereby locking the angle of the lower limb pad 5 and providing stable support for the patient's lower limb and knee joint.

[0027] In one embodiment of this utility model, such as Figure 1 As shown, a soft pad 51 is provided on the inner side of the lower limb pad 5 to provide more comfortable support for the patient's lower limbs. A locking screw 11 is provided on the adjustable telescopic arm 1 to lock its telescopic length. A connecting block 21 is provided between the supporting forearm 2 and the adjustable telescopic arm 1 to facilitate the assembly and disassembly of the supporting forearm 2 and the adjustable telescopic arm 1.

[0028] To clearly illustrate the above embodiments, refer to Figures 1-4 The working principle of the improved spinal canal puncture positioning device of this utility model is as follows: When using the positioning device of this application, the fixator 4 provided by this device is fixed next to the operating table or operating table. The patient lies on the left side of the operating table, facing the device of this utility model, with the back close to the edge of the bed and fully exposed, and the spine is positioned in a flexed position. During the positioning process, the anesthesiologist adjusts the telescopic arm 1 to a comfortable length according to the patient's height. After adjusting the length, the locking screw 11 is tightened. The lower limbs and the bottom of the knee joint are attached to the lower limb pad 5. Then, by loosening the locking bolt and rotating the angle of the lower limb pad 5, the optimal position of the patient's lower limbs is adjusted. The locking bolt is then tightened again, and the patient holds the handle 3 with their hands to position the spine in a flexed position.

[0029] Finally, the anesthesiologist locates the puncture point and adjusts the patient to the optimal position for spinal puncture. Afterwards, disinfection and draping are performed, and the spinal puncture procedure begins. This invention aims to create an adjustable, individualized spinal puncture positioning device. In clinical application, it can assist patients in proper positioning, improving the success rate of spinal puncture, while also significantly increasing the comfort and safety of the mother during the procedure.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An improved positioning device for spinal canal puncture, characterized in that, It includes an adjustable telescopic arm (1), a supporting forearm (2) and a supporting rear arm (7), wherein the supporting forearm (2) and the supporting rear arm (7) are respectively located at both ends of the adjustable telescopic arm (1), the supporting forearm (2) is provided with a handle (3), the supporting rear arm (7) is hinged with a lower limb pad (5), and the bottom of the supporting forearm (2) and the supporting rear arm (7) are both provided with a retainer (4).

2. The improved spinal canal puncture positioning device according to claim 1, characterized in that, The top of the supporting rear arm (7) is provided with a threaded hole (71), and a locking screw (6) is provided inside the threaded hole (71). The shaft of the locking screw (6) is fitted with a locking hinge (52). One side of the locking hinge (52) is connected to the lower limb pad (5), and the angle of the lower limb pad (5) can be rotated and adjusted according to the degree of flexion of the mother's lower limb. The bottom end of the locking hinge (52) is provided with a locking tooth (521), and the top end of the threaded hole (71) is provided with a fixing tooth (72). The fixing tooth (72) and the locking tooth (521) mesh with each other.

3. The improved spinal canal puncture positioning device according to claim 1, characterized in that, A soft pad (51) is provided on the inner side of the lower limb pad (5).

4. The improved spinal canal puncture positioning device according to claim 1, characterized in that, The adjustable telescopic arm (1) is provided with a locking screw (11) for locking its telescopic length.

5. The improved spinal canal puncture positioning device according to claim 1, characterized in that, A connecting block (21) is provided between the supporting forearm (2) and the adjusting telescopic arm (1).