Medical counter device and method of use

Abstract

The application relates to the technical field of medical devices, and discloses a medical counter device and a use method. The counter comprises an operating rod, a counter, a driver and an implant. The operating rod passes through the counter and is connected with the inside of the driver, the counter is provided with a linkage mechanism and a scale indicating mechanism, and is used for displaying the expansion height of the implant in real time. The linkage mechanism is driven by the rotation of the operating rod, and the scale indicating mechanism moves synchronously along the axial direction of the operating rod. The expansion height of the implant can be adjusted by forward or reverse rotation of the operating rod. The counter has a precise scale mark range, which is used for feeding back the expansion height. The implant has a telescopic structure, and the expansion state of the implant is displayed in real time by the scale indicating mechanism of the counter. The use method comprises the following steps: assembling the operating rod and the counter, locking the driver and the implant, implanting the implant, rotating the operating rod to adjust the expansion height, and monitoring in real time through the scale indicating mechanism. The method is suitable for medical operations which need to accurately control the expansion height of the implant.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a medical counter device, and to a method for using the same. BACKGROUND

[0002] In the field of medical surgery, especially in the performance of spinal surgery, it is often necessary to use implants such as fusion cages to stabilize the spine or promote intervertebral fusion. After implantation, such implants often need to achieve a certain distraction height between the vertebral bodies to ensure the success of the surgery and the recovery of the patient. However, in traditional surgical procedures, surgeons often rely on experience and feel to adjust the distraction height of the implant, which not only increases the uncertainty of the surgery, but also can lead to inaccurate distraction height, thereby affecting the surgical outcome.

[0003] In order to solve this problem, some medical devices that can measure and adjust the distraction height of the implant have appeared on the market, but these devices often have complex structures, are inconvenient to operate, and have limited accuracy. Therefore, it has become an urgent problem in the industry to develop a medical counter device that is simple in structure, easy to operate, and high in accuracy.

[0004] Most existing counters use mechanical or electronic measurement principles, but mechanical counters often have low accuracy and are prone to damage, while electronic counters can be affected by the surgical environment (such as electromagnetic interference, blood, etc.), leading to inaccurate measurement or failure. In addition, existing counters often have complex assembly and are not easy to operate when used with implants.

[0005] In view of the above shortcomings of the prior art, it is necessary to develop a medical counter device that is simple in structure, easy to operate, and can accurately display the distraction height of the implant in real time. SUMMARY

[0006] The purpose of the present application is to provide a medical counter device that can display the distraction height of the implant in real time, helping surgeons to accurately control the distraction state of the implant during surgery and avoiding medical accidents caused by improper distraction height. Through the counter, the surgeon can monitor the distraction height of the implant in real time during surgery, ensuring the accuracy and safety of the surgery.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] The medical counter device of the present application comprises an operating rod, a counter, a driver, and an implant.

[0009] One end of the operating rod is provided with an operating handle, the other end passes through the counter, and the distal end extends into the interior of the driver.

[0010] The counter comprises a linkage mechanism driven by rotation of the operating rod and a scale indicating mechanism which can be synchronously moved axially along the operating rod to display the implant expansion height in real time.

[0011] The driver is connected to one end of the counter, and the end of the driver is provided with a connecting head for detachable connection with the implant.

[0012] The implant expansion height is adjusted by forward or reverse rotation of the operating rod.

[0013] In addition to the above technical features, the present application is also optimized in the following aspects:

[0014] As a preferred technical solution of the present application, the linkage mechanism comprises an inner screw rod and a guide sleeve.

[0015] One end of the inner screw rod is fixed with a screw rod adjusting block, and the other end is provided with a screw cap connected with the driver.

[0016] The inner screw rod is provided with an axial through hole in the center, and the operating rod passes through the through hole and is threadedly connected with the connecting head of the driver.

[0017] The guide sleeve is sleeved on the outer part of the inner screw rod, and a guide groove is formed on the surface of the guide sleeve in the axial direction, and a scale mark is arranged beside the guide groove.

[0018] As a preferred technical solution of the present application, the scale indicating mechanism comprises a sliding sleeve and a display pin.

[0019] The sliding sleeve is sleeved on the inner screw rod and is threadedly connected with the inner screw rod.

[0020] One end of the display pin is fixed to the sliding sleeve, and the other end extends into the guide groove and can slide along the guide groove and point to the scale mark.

[0021] As a preferred technical solution of the present application, the screw rod adjusting block is a columnar structure, and an installation groove is arranged in the radial direction.

[0022] A threaded connecting block is fixed in the installation groove, and a half-thread hole is arranged on the threaded connecting block.

[0023] One end of the operating rod close to the operating handle is provided with an external thread sleeve which can move forward and backward along the operating rod, and the external thread sleeve is engaged with the half-thread hole of the threaded connecting block.

[0024] The inner screw rod is driven to rotate by rotating the operating handle, and the sliding sleeve and the display pin are moved along the guide groove.

[0025] As a preferred technical scheme of the present application, the operating rod is detachably connected with the counter, and the operating handle is engaged with the threaded sleeve and the threaded connecting block to realize torque transmission, so that the operating rod moves forward and backward to adjust the expansion height of the implant.

[0026] As a preferred technical scheme of the present application, the moving distance of the display pin is linearly proportional to the expansion height of the implant, which is used to accurately feedback the expansion height, and the driver is provided with a gripping handle for operating the implanting process of the implant.

[0027] As a preferred technical scheme of the present application, the display pin of the scale indicating mechanism of the counter moves along the axial direction, and the moving distance thereof is proportional to the expansion height of the implant, which is used to accurately display the expansion state of the implant.

[0028] As a preferred technical scheme of the present application, the implant has an expanded state and an unexpanded state, and the expansion height is displayed by the scale indicating mechanism of the counter, which is used to adjust the expansion height of the implant according to the surgical requirements.

[0029] As a preferred technical scheme of the present application, the scale indicating mechanism of the counter is provided with scale lines from 0 to 10 mm; and the expansion height adjustment range of the implant is 0-10 mm, which matches the matching scale setting range of the scale indicating mechanism.

[0030] The present application also provides a use method of the medical counter device, which comprises the following steps:

[0031] Assembling the operating rod and the counter through the threaded connecting block and the threaded sleeve;

[0032] Locking the connecting head of the driver and the implant;

[0033] Implanting the implant into the intervertebral disc through the gripping handle of the driver;

[0034] Rotating the operating handle to drive the inner screw rod to rotate and adjust the expansion height of the implant;

[0035] Real-time monitoring the expansion height through the scale mark pointed by the display pin.

[0036] In combination with the above technical content, the medical counter device of the present application realizes the deep integration of mechanical transmission and visual feedback, solves the problems of experience judgment, complicated operation and insufficient precision in the height adjustment of the traditional intervertebral disc implanting surgery, and has the following technical effects:

[0037] 1. Accurate control of the expansion height:

[0038] The application realizes the integration of height adjustment and real-time feedback function through the integrated design of linkage mechanism (inner screw and guide sleeve) and scale indicating mechanism (sliding sleeve and display pin).

[0039] The linear movement of the display pin along the guide groove is directly related to the height of the implant distraction. The doctor can quickly grasp the state of the implant through the intuitive scale identification (0-10mm).

[0040] The cooperation of the operating rod and the counter allows the doctor to accurately control the distraction height of the implant, ensuring the height accuracy during the operation.

[0041] 2. Precise control and real-time feedback:

[0042] The threaded cooperation design of the inner screw and the sliding sleeve, combined with the limiting guide of the display pin and the guide groove, realizes the linear proportional relationship between the implant distraction height and the scale identification, with an error range of less than 1mm.

[0043] The meshing structure of the screw rod adjusting block and the outer threaded sleeve directly drives the inner screw to rotate through the rotation of the operating handle, avoiding the transmission delay problem of traditional instruments.

[0044] The moving position of the indicating pin of the scale indicating mechanism corresponds to the scale one by one, and the doctor can directly see the exact height of the implant distraction in the human body, improving the operability and accuracy of the operation.

[0045] 3. Modular and detachable design:

[0046] The operating rod, counter and driver are detachably connected, which facilitates quick assembly, replacement or sterilization during the operation, improving the reusability and operational flexibility of the instrument.

[0047] The design of the gripping handle and the connecting head of the driver enhances the stability of the implant implantation process and avoids positioning deviation caused by operation shaking.

[0048] 4. Meet the needs of individualized surgery:

[0049] The scale indicating mechanism of the counter has a scale range of 0 to 10mm, which matches the adjustment range of the distraction height of the implant.

[0050] The doctor can flexibly adjust the distraction height of the implant according to the specific situation and operation needs of each patient, meeting the needs of individualized surgery.

[0051] The telescopic structure of the implant and its distraction state strictly match the scale identification, ensuring that the doctor can accurately adjust the height according to the patient's anatomical structure, avoiding the risk of nerve compression caused by excessive distraction.

[0052] 5. Improve the success rate of surgery and simplify the surgical procedure:

[0053] Due to the high accuracy and operability of the counter, the doctor can operate more safely during the operation, thereby improving the success rate of the operation.

[0054] Precise distraction height control helps reduce surgical complications and postoperative discomfort.

[0055] The simple structure and easy operation of the counter make the surgical procedure more concise and efficient, saving surgery time and improving surgery efficiency.

[0056] In summary, the medical counter device of the present application has shown significant technical effects in spinal surgery, not only improving the accuracy and operability of the operation, but also meeting the needs of personalized surgery, improving the success rate of surgery, and simplifying the surgical procedure. It provides a strong guarantee for the success of spinal surgery and the recovery of patients.

[0057] In summary, the present application realizes the precise control of distraction height in intervertebral disc implantation surgery, significantly reduces intraoperative radiation exposure, efficiently simplifies the surgical procedure, and fully covers the individualized needs through the innovative combination of mechanical precise transmission, real-time visual feedback, and modular design. Its technical effects directly translate into clinical advantages: improving the success rate of surgery, reducing the incidence of postoperative complications, and providing doctors with a safe, intuitive and reliable operation experience. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 is a longitudinal sectional view of the present application;

[0059] Figure 2 is a perspective structural schematic view of the present application;

[0060] Figure 3 is a counter structure schematic view of the present application;

[0061] Figure 4 is a structure schematic view of the counter in the third embodiment of the present application;

[0062] Figure 5 is a structure schematic view of the guide sleeve of the present application;

[0063] Figure 6 is a structure schematic view of the inner screw rod of the present application;

[0064] Figure 7 is a structure schematic view of the threaded connection block of the present application;

[0065] Figure 8 is a structure schematic view of the third embodiment of the present application.

[0066] In the figure: 1, operating rod; 2, counter; 201, guide sleeve; 211, guide groove; 202, nut; 203, threaded connecting block; 213, half threaded hole; 204, screw adjusting block; 214, mounting groove; 205, sliding sleeve; 206, display pin; 207, inner screw; 3, driver; 31, gripping handle; 32, connecting head; 4, implant; 5, lead-in screw; 51, external threaded sleeve. DETAILED DESCRIPTION

[0067] The preferred embodiments of the present application will be described herein below with reference to the drawings, in which it should be understood that the preferred embodiments described herein are intended to illustrate and explain the present application, and are not intended to limit the present application.

[0068] I. Description of Descriptive Language in the Present Application

[0069] The embodiments given in the present application in connection with the technical solutions are for making the present application more thorough and complete, and fully expressing the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified in the present application, the relative arrangement of the components set forth in these embodiments should be interpreted as merely exemplary, and not as a limitation on the technical solutions of the present application.

[0070] In the present application, if the terms "upper", "lower", "left", "right", "bottom", "top" and the like are used, they are defined with respect to the directions in the respective drawings, and are merely used to indicate relative positional relationships, and when the absolute position of the described object is changed, the relative positional relationships can also be changed accordingly. These or other directional terms should not be understood as limiting terms.

[0071] In the present application, the terms "one", "a", "an", "the", and the like similar words do not represent quantity limitations, and can represent singular or plural. The terms "include", "contain", "have", and any variations thereof in the present application are intended to cover non-exclusive inclusion; if the present application involves the terms "first", "second", "third", and the like, they are merely to distinguish similar objects, and do not represent a specific order of the objects.

[0072] In the present application, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0073] In addition, the technologies and devices known to those of ordinary skill in the relevant art are not discussed in detail, but in appropriate cases, the technologies and devices should be considered as part of the specification.

[0074] Second, the core technical problem to be solved by the technical scheme of the present application

[0075] The prior art has obvious deficiencies in measuring and adjusting the expansion height of implants used in medical procedures, especially in spinal surgery. Traditional methods rely on the experience and feel of the doctor, increasing the uncertainty of the operation and possibly leading to inaccurate expansion height, affecting the effectiveness of the operation. Although some medical devices for measuring and adjusting the expansion height have appeared on the market, these devices have complex structures, are inconvenient to operate, and have limited precision. Mechanical counters have the problems of low precision and easy damage, while electronic counters may be affected by the operating environment (such as electromagnetic interference, blood), leading to inaccurate measurement or failure. At the same time, existing counters are complex to assemble and difficult to operate when used with implants. Therefore, there is an urgent need in the industry to develop a medical counter device with a simple structure, easy to operate, and capable of accurately displaying the expansion height of the implant in real time, to improve the precision and success rate of the operation and promote patient recovery.

[0076] Three, based on the above problems, the present application particularly provides a technical scheme to solve the above problems, which will be described in detail below in combination with specific embodiments, technical scheme, working principle and technical effects.

[0077] Example 1

[0078] (I) Please refer to Figure 1 , Figure 2 , a medical counter device mainly includes an operating rod assembly, a counter assembly, a driver assembly and an implant assembly.

[0079] 1. Operating rod assembly

[0080] Operating rod: made of 304 stainless steel, length 300mm, diameter 50mm, with high rigidity and bending strength.

[0081] Operating handle: provided at one end of the operating rod, made of anti-slip rubber, with knurled surface, grip diameter 30mm, can transmit torque ≥5N·m.

[0082] External thread sleeve: provided at the other end of the operating rod, outer diameter 6mm, pitch 1mm, engaged with the half-thread hole 213 of the threaded connection block 203 of the counter assembly, realizing detachable assembly.

[0083] 2. Counter assembly

[0084] As shown in Figure 3 , Figure 5 , Figure 6 , Figure 7 , the counter assembly includes a linkage mechanism and a scale indicating mechanism.

[0085] Linkage mechanism:

[0086] Inner screw rod 207: titanium alloy TC4 material, length 150 mm, outer diameter 8 mm, surface processing pitch 2 mm trapezoidal thread, transmission efficiency ≥ 90%.

[0087] One end of the inner screw rod 207 is fixed with a screw rod adjusting block 204, and the other end is provided with a screw cap 202 connected with the driver 3;

[0088] The inner screw rod 207 is provided with an axial through hole, and the operating rod 1 passes through the through hole and is threadedly connected with the connecting head 32 of the driver 3.

[0089] The screw rod adjusting block 204 is a columnar structure, which is provided with a mounting groove 214 in the radial direction, and the mounting groove is a square mounting groove.

[0090] The mounting groove 214 is fixedly provided with a threaded connecting block 203, the threaded connecting block 203 is square matched with the square mounting groove, and the threaded connecting block 203 is provided with a half threaded hole 213.

[0091] The operating rod 1 is provided with an external thread sleeve 51 at one end close to the operating handle, and the external thread sleeve 51 is engaged with the half threaded hole 213 of the threaded connecting block 203. The inner screw rod 207 is driven to rotate by rotating the operating handle, and the sliding sleeve 205 and the display pin 206 are driven to move along the guide groove 211.

[0092] The guide sleeve 201 is made of transparent polycarbonate material with a wall thickness of 2 mm, which is sleeved on the outer part of the inner screw rod, and an axial guide groove 211 with a width of 3 mm is provided, and a 0-50mm scale is printed beside the groove (the minimum graduation value is 1mm).

[0093] The screw cap 202 is provided at the end of the inner screw rod and is locked with the connecting head 32 of the driver through threads.

[0094] Scale indicating mechanism:

[0095] The sliding sleeve 205 is a H62 copper sleeve with an inner diameter of 8 mm, which is matched with the inner screw rod thread, and the axial movement stroke is 50 mm.

[0096] The display pin 206 is a stainless steel needle with a diameter of 1 mm, one end of which is welded to the sliding sleeve, the other end of which extends into the guide groove 211, and the end is coated with a red fluorescent coating (wavelength 620nm), and the visible distance during operation is ≥ 500mm.

[0097] 3. Driver assembly 3

[0098] Main structure: 6061 aluminum alloy material, front connecting head 32 is titanium alloy TC4 with a diameter of 10 mm, which is locked with the implant 4 through a spring buckle (the buckle unlocking force is ≥ 15N).

[0099] Grasping handle 31: silicone material, length 80 mm, surface provided with diamond-shaped anti-slip convex, holding angle 15° inclined, in line with ergonomics.

[0100] 4. Implant assembly 4

[0101] Material and structure: nickel-titanium alloy (NiTi, phase transition temperature 25°C) telescopic support, initial height 5 mm, maximum expansion height 50 mm, expansion force 200 N, elastic modulus 60 GPa.

[0102] Connection interface: tail with buckle slot (2 mm deep), matched with driver connection head (32).

[0103] (ii) Operation process

[0104] 1. Preoperative assembly:

[0105] Screw the outer threaded sleeve 51 of the operating rod 1 into the half-threaded hole 213 of the threaded connection block 203, rotate 3 turns to engage and lock (torque 2 N·m).

[0106] Press the buckle spring of the driver connection head 32, align and lock the tail buckle slot of the implant 4, and confirm the connection by hearing the "click" sound.

[0107] 2. Implant implantation:

[0108] The doctor holds the grasping handle 31 and pushes the implant 4 into the target position along the intervertebral space axis, and confirms that the initial positioning error is ≤2 mm under the C-arm lateral perspective during the operation.

[0109] 3. Expansion height adjustment:

[0110] Rotate the operating handle clockwise, drive the inner screw 207 to rotate 1 turn (360°), and the sliding sleeve 205 moves axially 2 mm (pitch 2 mm), and the display pin 206 moves synchronously in the guide slot 211, with an accuracy of ±0.5 mm in the scale reading.

[0111] When the display pin points to the scale "35 mm", the actual expansion height of the implant is 35±0.8 mm (actual measurement data), which meets the demand for height recovery of the L4-L5 segment intervertebral space.

[0112] 4. Intraoperative fine adjustment:

[0113] If you need to reduce the height, rotate the operating handle counterclockwise by half a turn (180°), and the sliding sleeve moves 1 mm in the opposite direction, and the implant height decreases linearly by 1 mm, achieving fine adjustment.

[0114] 5. Postoperative treatment:

[0115] Reverse rotation of the operating rod 1 releases the engagement of the outer threaded sleeve 51 and the threaded connection block 203.

[0116] Press the release button of the connecting head 32, remove the implant 4, and sterilize the whole set of instruments by high-pressure steam at 135°C (30 minutes) for reuse.

[0117] 6. Verification data

[0118] (1) Precision test: In the simulated surgery, the average error between the implant expansion height and the displayed scale reading was 0.8 mm (standard deviation 0.2 mm).

[0119] (2) Operation efficiency: The single height adjustment time was shortened from 45 seconds for traditional instruments to 28 seconds (efficiency improved by 38%).

[0120] (3) Durability: After 200 cycles of testing, the thread gap between the inner screw and the sliding sleeve increased by ≤0.05 mm, and the display pin offset was <0.5 mm.

[0121] Example Two

[0122] This example is based on the optimization of Example 1, with the following main improvements:

[0123] 1. Counter assembly improvement

[0124] Adjustable guide slot 211 width: By replacing different guide sleeves 201, the slot width can be adjusted within the range of 2-4 mm, suitable for different surgical scenarios (such as narrower slot width under minimally invasive incision).

[0125] Scale graduation value refinement: The minimum graduation value can be set to 0.5 mm (requires cooperation with magnifying glass scale markings), suitable for cervical spine and other surgeries with higher precision requirements.

[0126] 2. Implant assembly improvement

[0127] Height customization: The maximum expansion height of the nickel-titanium alloy support supports multiple specifications such as 40 mm, 45 mm, and 55 mm, suitable for different segment requirements of thoracic and lumbar vertebrae.

[0128] Adjustable expansion force: By changing the support wall thickness (0.5-1.2 mm), the expansion force can be adjusted within the range of 150-300 N, matching patients with osteoporosis or osteosclerosis.

[0129] 3. Technical effects

[0130] Enhanced adaptability: Adjustable guide slot and customized implant cover more than 90% of intervertebral disc surgery types.

[0131] Improved precision: 0.5 mm graduation value allows cervical spine surgery height error to be controlled within ±0.3 mm.

[0132] In summary, this application achieves real-time and precise control of the implant's expansion height through an integrated design of mechanical transmission and visual feedback. Furthermore, it expands the clinical applicability and adjustment precision of the device.

[0133] This application has the core advantages of compact structure and intuitive operation, and can effectively solve the problems of operation-feedback separation and insufficient accuracy in traditional technologies.

[0134] Example 3

[0135] This embodiment is an optimization based on Embodiment 1 and Embodiment 2, with the main improvements as follows:

[0136] like Figure 4 , Figure 8 As shown, the screw adjusting block 204 has a columnar structure with a radial mounting groove 214; the mounting groove is a circular groove.

[0137] A cylindrical threaded connecting block 203 is fixed in the mounting groove 214, and the cylindrical threaded connecting block 203 is provided with a semi-threaded hole 213;

[0138] The operating lever 1 is provided with an external threaded sleeve 51 at one end near the operating handle, and the external threaded sleeve 51 engages with the semi-threaded hole 213 of the threaded connecting block 203;

[0139] The internal screw 207 is driven to rotate by rotating the operating handle, which in turn causes the sliding sleeve 205 and the display pin 206 to move along the guide groove 211.

[0140] Finally, to illustrate this application more clearly, the working principle of this application is explained as follows:

[0141] This medical counter device utilizes a synergistic mechanism of mechanical transmission and visual feedback to convert the rotational motion of the operating lever into a linear expansion action of the implant, simultaneously displaying the height in real time via a scale indicator mechanism. Its core working principle is as follows:

[0142] 1. Rotational-linear motion conversion

[0143] Operation input: The doctor rotates the operating handle 1, which drives the operating rod 1 and the external threaded sleeve 51 to rotate.

[0144] Torque transmission: The external threaded sleeve 51 engages with the semi-threaded hole 213 of the threaded connecting block 203, transmitting the rotational torque to the internal threaded rod 207.

[0145] Screw drive: During rotation, the inner screw 207 converts the rotational motion into the linear axial movement of the sliding sleeve 205 through the threaded engagement (2mm pitch) with the sliding sleeve 205.

[0146] Mechanical transmission ratio: for every rotation (360°), the sliding sleeve 205 moves a distance = pitch (2mm), the implant (4) is expanded to a height = the distance moved by the sliding sleeve (1:1 linear ratio).

[0147] 2. High real-time feedback mechanism

[0148] Display positioning: axial movement of the sliding sleeve 205 drives the display pin 206 to slide along the guide groove 211 of the guide sleeve 201.

[0149] Scale mark: a 0-50mm scale (1mm interval) is provided beside the guide groove 211, and the fluorescent coating at the end of the display pin 206 points to the current height value.

[0150] Error control: the lateral limiting effect of the guide groove 211 prevents the circumferential deviation of the sliding sleeve 205, ensuring that the display pin 206 is strictly aligned with the scale, and the reading error is ≤±1mm.

[0151] 3. Implant expansion control

[0152] Force transmission path: rotation of the inner screw 207 is transmitted to the connector 32 of the driver 3 through the nut 202, pushing the expandable support of the implant 4 to expand.

[0153] Bidirectional adjustment: forward rotation expands the implant 4, and the display pin 206 moves towards the 50mm scale. Reverse rotation contracts the implant 4, and the display pin 206 moves towards the 0mm scale.

[0154] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0155] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

Claims

1. A medical counter device, characterized by, The utility model relates to a kind of implanting device, including: Operating rod (1), counter (2), driver (3) and implant (4); The operating rod (1) one end is provided with operating handle, the other end passes through counter (2), and the end stretches into the inside of driver (3); The counter (2) includes linkage mechanism and scale indicating mechanism, the linkage mechanism is driven by the rotation of operating rod (1), the scale indicating mechanism can be moved along operating rod (1) axial synchronous, for real-time display implant (4) the height of expansion; The driver (3) is connected in one end of counter (2), and the end of the driver (3) is equipped with connector (32), for being detachably connected with implant (4); The expansion height of the implant (4) is adjusted by the forward or reverse rotation of operating rod (1); The linkage mechanism includes inner screw rod (207) and guide sleeve (201); The inner screw rod (207) one end is fixed with screw rod adjusting block (204), and the other end is equipped with screw cap (202) connected with driver (3); The inner screw rod (207) center is equipped with axial through hole, and the operating rod (1) passes through the through hole and is threadedly connected with the connector (32) of driver (3); The guide sleeve (201) is sleeved on the outer portion of inner screw rod (207), and the surface is opened with guide groove (211) along the axial direction, and the guide groove (211) is equipped with scale mark beside; The scale indicating mechanism includes sliding sleeve (205) and display pin (206); The sliding sleeve (205) is sleeved on inner screw rod (207) and is threadedly connected with inner screw rod (207); The display pin (206) one end is fixed to sliding sleeve (205), and the other end stretches into the guide groove (211) of guide sleeve (201), can slide along guide groove (211) and point to scale mark.

2. The medical counter device of claim 1, wherein, The screw rod adjusting block (204) is columnar structure, and the radial direction is equipped with installation groove (214); The installation groove (214) is fixed with threaded connecting block (203), and the threaded connecting block (203) is equipped with half screw hole (213); The operating rod (1) is equipped with a external thread sleeve (51) that can move along the operating rod front and back near the operating handle, and the external thread sleeve (51) is engaged with the half screw hole (213) of threaded connecting block (203); By rotating operating handle, drive inner screw rod (207) to rotate, drive sliding sleeve (205) and display pin (206) to move along guide groove (211).

3. The medical counter device of claim 1, wherein, The operating rod (1) is detachably connected with counter (2), and the operating handle is engaged with threaded connecting block (203) through external thread sleeve (51), realizes torque transmission, so that operating rod moves forward and backward, to adjust the expansion height of implant.

4. The medical counter device of claim 1, wherein, The moving distance of the display pin (206) is linearly proportional to the expansion height of the implant (4), for accurately feedback expansion height;The driver (3) is equipped with gripping handle (31), for operating the implanting process of implant (4);The implant (4) is telescopic structure, and the expansion height is real-time displayed through the scale mark of counter (2), and the maximum expansion height is 10 millimeters.

5. The medical counter device of claim 1, wherein, The display pin (206) of the scale indicating mechanism of the counter (2) moves along the axial direction, and the moving distance is proportional to the expansion height of the implant (4), which is used to accurately display the expansion state of the implant (4).

6. The medical counter device of claim 1, wherein, The implant (4) has an expanded state and an unexpanded state, and the expansion height is displayed by the scale indicating mechanism of the counter (2), which is used to adjust the expansion height of the implant (4) according to the surgical requirements.

7. The medical counter device of claim 1, wherein, The scale indicating mechanism of the counter (2) is provided with scale lines of 0-10mm; the expansion height adjustment range of the implant (4) is 0-10mm, which matches the matching scale setting range of the scale indicating mechanism.

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