Combined medical device and method of using the same

Abstract

The present invention discloses a combined medical device and a method for using the same, including: a clamping unit, one end of which is operable to clamp human tissue, and the other end of which is connected to a combined locking unit; a combined locking unit, one end of which is connected to the clamping unit, and the other end of which is connected to a driving component; a driving component used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit; the combined locking unit includes a locking element and a release element, wherein the release element is used to control the shape of the locking element; when the human tissue is clamped in place, the release element is operated to release the locking element, so that the opening and closing angle of the clamping unit is fixed. The present invention can reduce the operating force and surgical difficulty of the medical device, avoid the problem of rotation of the medical device, the transmission mechanism of the instrument is simple, the number of parts is reduced, and the applicability and functionality of the product are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a combined medical device and a method of using the same. Background Art

[0002] During the valve repair process, the clamped instrument needs to be locked to prevent it from detaching. Existing instruments often use the principle of thread self-locking, which has many problems such as complex operation, large drive mechanism stroke, and heavy instrument weight. In particular, a large driving external force will cause the instrument to rotate and deteriorate the surgical effect. Therefore, an improved medical device is needed to overcome the above problems and improve the repair effect. Summary of the invention

[0003] To overcome the above problems, the present invention provides a combined medical device and a method of using the same, which can reduce the operating force and surgical difficulty of the medical device, avoid the problem of the medical device rotating, and the transmission mechanism of the device is simple, reducing the number of parts, thereby enhancing the applicability and functionality of the product.

[0004] To achieve the above object, according to one aspect of an embodiment of the present invention, a combined medical device is provided, comprising:

[0005] A clamping unit, one end of which is operable to clamp human tissue and the other end of which is connected to the combined locking unit;

[0006] A combined locking unit, one end of which is connected to the clamping unit and the other end of which is connected to the driving component;

[0007] A driving component, which is used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit;

[0008] The combined locking unit comprises a locking element and a releasing element, wherein the releasing element is used to control the shape of the locking element; when the human tissue is clamped in place, the releasing element is operated to release the locking element, so that the opening and closing angle of the clamping unit is fixed.

[0009] Optionally, the clamping unit comprises at least one pair of clamping arms, a base and a rotating arm; wherein the clamping arms are pivotally connected to the base so as to rotate along a pivot point on the base to change the opening and closing angle between the clamping arms;

[0010] One end of the rotating arm is pivotally connected to the middle part of the clamping arm, and the other end is pivotally connected to the combined locking unit.

[0011] Optionally, a groove corresponding to the clamping arm and extending in the axial direction is provided on the outer peripheral side of the base; the other end of the rotating arm can swing in the groove after being pivotally connected to the combined locking unit.

[0012] Optionally, the locking element in the combined locking unit includes a chassis and at least one pair of locking arms, wherein the locking arms are fixedly connected to the chassis and extend along the axis of the chassis; wherein each of the locking arms includes two oppositely arranged locking rods, the locking rods are installed in the grooves and can slide along the axis of the grooves, and at least one surface of the end of the locking rod away from the chassis is provided with a toothed structure that engages with the end surface of the groove.

[0013] Optionally, a through hole is provided in the middle of the locking rod, and the end of the rotating arm is rotatably connected in the through hole, so that the driving component drives the chassis to move to drive the rotating arm to swing in the groove.

[0014] Optionally, the release element includes a disengagement rod corresponding to the locking rod; wherein, when the medical device is in an unlocked state, the locking rod abuts against the disengagement rod to allow the locking rod to slide in the groove; when the medical device is in a locked state, the locking rod is separated from the disengagement rod, the locking rod returns to its original shape, and its toothed structure is engaged with the end face of the groove.

[0015] Optionally, the driving component includes a driving rod, and an end of the driving rod is threadedly connected to the center hole of the chassis.

[0016] Optionally, the release element also includes a detachment base plate, the detachment rod is arranged on one side of the detachment base plate, and a detachment tube extending along the axis is arranged on the other side of the detachment base plate; the drive rod passes through the detachment tube and the detachment base plate in sequence and is threadedly connected to the chassis.

[0017] Optionally, the locking rod is made of shape memory material.

[0018] According to a second aspect of an embodiment of the present invention, there is provided a method for using a combined medical device, comprising:

[0019] A clamping unit, one end of which is operable to clamp human tissue and the other end of which is connected to the combined locking unit;

[0020] A combined locking unit, one end of which is connected to the clamping unit and the other end of which is connected to the driving component;

[0021] A driving component, which is used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit;

[0022] The combined locking unit includes a locking element and a releasing element. When in use, the releasing element is controlled in the non-locking state of the medical device to put the locking element in a retracted state; after the human tissue is clamped in place, the releasing element is operated to release the locking element to fix the opening and closing angle of the clamping unit.

[0023] Optionally, the clamping unit comprises at least one pair of clamping arms, a base and a rotating arm; wherein the clamping arm is pivotally connected to the base;

[0024] One end of the rotating arm is pivotally connected to the middle of the clamping arm, and the other end is pivotally connected to the combined locking unit;

[0025] The driving component controls the combined locking unit to move, so that the clamping arms rotate along the pivot points on the base to change the opening and closing angles between the clamping arms.

[0026] Optionally, a groove corresponding to the clamping arm and extending in the axial direction is provided on the outer peripheral side of the base; the other end of the rotating arm can swing in the groove after being pivotally connected to the combined locking unit.

[0027] Optionally, the locking element in the combined locking unit includes a chassis and at least one pair of locking arms, wherein the locking arms are fixedly connected to the chassis and extend along the axis of the chassis; wherein each of the locking arms includes two oppositely arranged locking rods, the locking rods are installed in the grooves and can slide along the axis of the grooves, and at least one surface of the end of the locking rod away from the chassis is provided with a toothed structure that engages with the end surface of the groove.

[0028] Optionally, a through hole is provided in the middle of the locking rod, and the end of the rotating arm is rotatably connected in the through hole, so that the driving component drives the chassis to move to drive the rotating arm to swing in the groove.

[0029] Optionally, the release element includes a disengagement rod corresponding to the locking rod; wherein, when the medical device is in an unlocked state, the locking rod abuts against the disengagement rod to allow the locking rod to slide in the groove; when the medical device is in a locked state, the locking rod is separated from the disengagement rod, the locking rod returns to its original shape, and its toothed structure is engaged with the end face of the groove.

[0030] Optionally, the driving component includes a driving rod, and an end of the driving rod is threadedly connected to the center hole of the chassis.

[0031] Optionally, the release element also includes a detachment base plate, the detachment rod is arranged on one side of the detachment base plate, and a detachment tube extending along the axis is arranged on the other side of the detachment base plate; the drive rod passes through the detachment tube and the detachment base plate in sequence and is threadedly connected to the chassis.

[0032] Optionally, the locking rod is made of shape memory material.

[0033] The technical solution of the present invention has the following advantages or beneficial effects:

[0034] (1) The present invention combines a locking element and a releasing element so that the medical device releases the releasing element only after the human tissue is clamped in place to fix the opening and closing angle of the clamping unit; thus avoiding the problem of the existing thread locking method that the thread is always in a locked state due to the self-locking of the thread, which increases the operating force and makes the surgery difficult.

[0035] (2) The present invention pivotally connects the locking rod, the rotating arm and the clamping arm in sequence, and pulls the locking rod forward and backward by the driving component to adjust the clamping angle. This can not only quickly clamp human tissue, improve surgical efficiency, and simplify operation; it also avoids the problem of medical device rotation caused by the use of a threaded rotation adjustment method, thereby improving the accuracy of human tissue clamping.

[0036] (3) The locking rod and the disengagement rod are used in combination in the present invention, adopting this newly designed snap-fit ​​structure and utilizing the deformation tendency of the locking rod to return to its original shape, so that the tooth-like features can lock the medical device, thereby reducing the size of the device, the weight of the medical device, the patient's burden, and the postoperative risks.

[0037] (4) The transmission mechanism of the present invention is simple, which reduces the number of parts and enhances the applicability and functionality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0039] Figure 1 is a schematic diagram of a medical device of the prior art;

[0040] Figure 2 is a schematic diagram of a portion of a medical device placed in a human body according to an embodiment of the present invention;

[0041] Figure 3 is an exploded view of a portion of a medical device placed in a human body according to an embodiment of the present invention;

[0042] Figure 4 is a schematic diagram of an assembly structure of a medical device according to an embodiment of the present invention;

[0043] Figure 5 is an exploded view of an assembly structure of a medical device according to an embodiment of the present invention;

[0044] Figure 6 is a schematic diagram of a longitudinal section of a tissue clamped by a medical device according to an embodiment of the present invention;

[0045] Figure 7 is a partial enlarged view of the clamping state of the medical device according to an embodiment of the present invention;

[0046] Figure 8is a schematic diagram of a clamping arm of a medical device according to an embodiment of the present invention;

[0047] Fig. 9 is a schematic diagram of a rotating arm of a medical device according to an embodiment of the present invention;

[0048] Fig.10 is a schematic diagram of a base of a medical device according to an embodiment of the present invention;

[0049] Fig.11 is a schematic diagram of a locking element of a medical device according to an embodiment of the present invention;

[0050] Fig.12 is a schematic diagram of a release element of a medical device according to an embodiment of the present invention;

[0051] Fig.13 is a schematic diagram of a driving rod of a medical device according to an embodiment of the present invention;

[0052] Fig.14 is a cross-sectional schematic diagram of an assembly structure of a locking element and a releasing element of a medical device according to an embodiment of the present invention;

[0053] Fig.15 is a schematic diagram of a longitudinal section of a medical device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0055] According to one aspect of an embodiment of the present invention, a combined medical device is provided.

[0056] The combined medical device involved in the embodiment of the present invention is mainly used in implantable devices, especially in implantable devices for treating heart valve diseases, to achieve the purpose of reducing the valve ring. As mentioned above, there are many devices for reducing the valve ring in the prior art, such as Figure 1The mechanism shown in the figure realizes the opening and closing of the clamping arm by rotating the driving screw. After the instrument clamps the tissue, the clamping arm is locked by the self-locking property of the thread. The instrument requires a large torque to drive the screw to rotate. During use, the instrument will rotate under the action of the driving torque, which reduces the tissue clamping accuracy and is not conducive to the operation. Secondly, because the rotation of the screw requires a large axial stroke, the ineffective distance of the instrument is increased, thereby increasing the size of the instrument. In order to solve at least one problem in the prior art, the present invention provides a new medical device. Specifically, as Figures 2 to 5 The embodiment shown in the figure describes a combined medical device, which includes a clamping unit for clamping human tissue, such as a heart valve, etc. One end of the clamping unit (such as Figure 5 and Figure 6 The left end shown in the figure can be operably clamped to human tissue. In practice, the clamping unit can be provided with a clamping arm 101, and the clamping arms are preferably arranged in pairs, so that the target tissue can be clamped quickly and conveniently by clamping. Of course, multiple clamping arms can be provided as needed to improve the clamping effect. The other end of the clamping unit is connected to the combined locking unit. Specifically, one end of the combined locking unit is connected to the clamping unit, and the other end is connected to the driving component. The driving component is used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit. In order to overcome the drawbacks of the prior art using threaded drive, the present invention redesigns the combined locking unit; the combined locking unit includes a locking element 104 and a release element, wherein the release element is used to control the shape of the locking element, such as keeping the locking element in a non-locked (or locked) state. Figure 5 and when the human tissue is clamped in place, the release element can be operated to release the locking element to release the retracted state, thereby fixing the opening and closing angle of the clamping unit to achieve the purpose of fixing the medical device.

[0057] Optional, such as Figure 5 As shown, the clamping unit includes at least one pair of clamping arms 101, a base 103 and a rotating arm 102. The clamping arm is pivoted on the base. In practice, a through hole can be set at the end of the clamping arm 101, a cylindrical protrusion can be set on the base 103, and then the through hole can be assembled to the protrusion to achieve pivotal assembly. This assembly method enables the clamping arm to rotate along the pivot point on the base to change the opening and closing angle between the clamping arms, thereby facilitating the adjustment of the clamping position and clamping force of the tissue. One end of the rotating arm 102 is pivoted to the middle part of the clamping arm, and the other end is pivoted to the combined locking unit. When in use, the rotating arm 102 is driven to rotate by controlling the position of the combined locking unit, and then the rotation of the clamping arm is controlled to adjust the opening and closing angle.

[0058] Optionally, the outer peripheral side of the base 103 is provided with a groove corresponding to the clamping arm and extending along the axial direction of the base; the other end of the rotating arm (such as Figure 5 The right end of the rotating arm shown in FIG. 1 is pivotally connected to the combined locking unit and can swing in the groove. Figure 5 In the embodiment shown, the right end of the rotating arm is located in the groove, and the right end moves in the groove to make the rotating arm swing in the groove. That is, the pivot point between the rotating arm and the combined locking unit is located in the groove.

[0059] Optionally, the locking element 104 in the combined locking unit includes a chassis and at least one pair of locking arms, wherein the locking arms are fixedly connected to the chassis and extend along the axis of the chassis. Of course, according to processing requirements, the locking arms and the chassis can be integrally formed. Each of the locking arms includes two locking rods arranged opposite to each other. Figure 5 In the embodiment shown, a total of four locking rods are provided. The locking rods are installed in the grooves and can slide or move along the axis of the grooves.

[0060] At least one surface of the end of the locking rod away from the chassis is provided with a toothed structure that engages with the end surface of the groove, such as Figure 7 As shown, after the locking rod is released, when it returns to its original state from the retracted state, the toothed structure will engage with the end surface of the groove, thereby achieving the purpose of locking the clamping arm.

[0061] Optional, such as Figure 3 In the illustrated embodiment, a through hole is provided in the middle of the locking rod, and cylindrical protrusions are provided on the two side surfaces of the end of the rotating arm, respectively, and the protrusions are respectively assembled with the corresponding through holes, so that the rotating arm and the locking rod are pivotally connected together. When the driving component is pulled forward and backward along the axial direction, the chassis can be driven to move forward and backward, thereby driving the rotating arm to swing in the groove. Due to the pivotal relationship between the rotating arm and the clamping arm, the above-mentioned driving relationship will further drive the clamping arm to rotate to change the opening and closing angle. It should be noted that in order to overcome the problems of low driving efficiency, large invalid stroke and inconvenient adjustment of the threaded locking structure in the prior art, the present invention pulls the locking element along the axis of the device by the driving component, so that the opening and closing angle of the clamping unit can be conveniently adjusted, especially in the scene where the clamping position or the opening and closing angle needs to be repeatedly adjusted, it can greatly improve the surgical efficiency and improve the success rate of the operation. At the same time, it also overcomes the problem of rotation of the medical device caused by the rotation torque in the prior art, and improves the clamping accuracy.

[0062] Optional, such as Figure 5As shown, the release element includes a disengagement rod 105 corresponding to the locking rod; wherein, in the unlocked state of the medical device, the locking rod abuts against the disengagement rod to allow the locking rod to slide or move in the groove. Exemplarily, the length of the disengagement rod in the groove needs to be set according to the adjustment needs of the opening and closing angles, and the length should ensure that the toothed structure of the locking rod is effectively constrained by the disengagement rod in the unlocked state, so that the locking rod abuts against the disengagement rod and slides or moves smoothly along the axial direction of the groove. When the medical device is in the locked state, that is, after the desired tissue clamping purpose is achieved, the locking rod is separated from the disengagement rod, as shown in FIG. Figure 5 In the illustrated embodiment, the release element can be withdrawn backward along the axis of the drive mechanism, at which time the locking rod loses its constraint and returns to its original shape, with its toothed structure engaging with the end surface of the groove.

[0063] Optional, see Figure 5 The driving component comprises a driving rod 107, the end of which is threadedly connected to the central hole of the chassis.

[0064] Optional, such as Figure 5 In the embodiment shown, the release element further comprises a release base plate, the release rod is arranged on one side of the release base plate, and a release tube 106 extending along the axis of the release base plate is arranged on the other side of the release base plate; Figure 5 and 6 The driving rod is shown to be threadedly connected to the chassis after passing through the detachment tube and the detachment bottom plate in sequence.

[0065] Optionally, the locking rod is made of a shape memory material. In practice, the shape memory material includes but is not limited to a shape memory alloy, such as nickel titanium alloy, etc. The locking rod has a shape memory material. Figure 7 Therefore, in use, as long as the shape of the locking rod is effectively controlled, the opening and closing angle of the clamping unit of the medical device can be locked only when needed. It is understandable that, in addition to shape memory materials, the locking rod can also be made of conventional elastic materials, that is, it can be pre-bent into a Figure 7 In the unlocking stage of the device, the wall surface of the release element can be used to constrain its shape so that it is in a retracted state; when the release element is withdrawn, it will return to the Figure 7 The shape shown is used to achieve the purpose of snap-on locking.

[0066] Through the description of the above structural details, it can be found that the transmission mechanism of the present invention is simple, the number of parts and the size of the device are reduced, and the applicability and functionality of the product are increased. It should be noted that the embodiment of the present invention only describes the core components of the device, and other minor components have been omitted. In actual use, the required structure can be supplemented as needed to improve the device.

[0067] According to the second aspect of the embodiment of the present invention, there is provided a method for using a combined medical device, comprising: a clamping unit, one end of which is operable to clamp human tissue, and the other end of which is connected to a combined locking unit; a combined locking unit, one end of which is connected to the clamping unit, and the other end of which is connected to a driving component; a driving component, which is used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit; the combined locking unit comprises a locking element and a releasing element. In actual use, after the medical device is placed at the target position through the control mechanism, the driving component can be operated to adjust the engagement angle of the clamping unit, and the releasing element can be controlled in the non-locking state of the medical device to put the locking element in a retracted state; after the human tissue is clamped in place, the releasing element is operated to release the locking element to fix the opening and closing angle of the clamping unit.

[0068] Optionally, in the operating method, the clamping unit includes at least one pair of clamping arms, a base and a rotating arm; wherein the clamping arm is pivoted to the base; one end of the rotating arm is pivoted to the middle part of the clamping arm, and the other end is pivoted to the combined locking unit; the driving component controls the movement of the combined locking unit so that the clamping arm rotates along the pivot point on the base to change the opening and closing angle between the clamping arms.

[0069] Optionally, in the operating method, a groove corresponding to the clamping arm and extending in the axial direction is provided on the outer peripheral side of the base; the other end of the rotating arm is pivotally connected to the combined locking unit and can swing in the groove.

[0070] Optionally, in the operating method, the locking element in the combined locking unit includes a chassis and at least one pair of locking arms, wherein the locking arms are fixedly connected to the chassis and extend along the axis of the chassis; wherein each of the locking arms includes two oppositely arranged locking rods, the locking rods are installed in the grooves and can slide or move along the axis of the grooves, and at least one surface of the end of the locking rod away from the chassis is provided with a toothed structure that engages with the end face of the groove.

[0071] Optionally, in the operating method, a through hole is provided in the middle of the locking rod, and the end of the rotating arm is rotatably connected in the through hole, so that the driving component drives the chassis to move to drive the rotating arm to swing in the groove.

[0072] Optionally, in the operating method, the release element includes a disengagement rod corresponding to the locking rod; wherein, when the medical device is not locked, the locking rod abuts against the disengagement rod to allow the locking rod to slide in the groove; when the medical device is locked, the locking rod is separated from the disengagement rod, the locking rod returns to its original shape, and its toothed structure is engaged with the end face of the groove.

[0073] Optionally, in the operating method, the driving component includes a driving rod, and an end of the driving rod is threadedly connected to a center hole of the chassis.

[0074] Optionally, in the operating method, the release element also includes a detachment base plate, the detachment rod is arranged on one side of the detachment base plate, and the other side of the detachment base plate is provided with a detachment tube extending along the axis; the drive rod passes through the detachment tube and the detachment base plate in sequence and is threadedly connected to the chassis. In actual use, the front and rear position of the chassis can be adjusted by controlling the forward and backward movement of the drive rod, thereby changing the swing angle of the rotating arm pivotally connected to the locking rod, and finally changing the opening and closing angle of the clamping unit. After adjusting the clamping angle, the release element can be withdrawn to release the locking rod so that it is engaged on the base to complete the fixation of the medical device. Finally, the drive rod is separated from the chassis, and the drive rod is withdrawn, and the device left in the human body such as Figure 2 shown.

[0075] Optionally, in the operating method, the locking rod is made of shape memory material.

[0076] It should be noted that the detailed structure of the device in the above method can refer to the description of the first aspect of the implementation of the present invention.

[0077] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined medical device, comprising: A clamping unit, one end of which is operable to clamp human tissue and the other end of which is connected to the combined locking unit; A combined locking unit, one end of which is connected to the clamping unit and the other end of which is connected to the driving component; A driving component, which is used to control the position of the combined locking unit to adjust the opening and closing angle of the clamping unit; Features: The combined locking unit includes a locking element and a releasing element, wherein the releasing element is used to control the shape of the locking element; when the human tissue is clamped in place, the releasing element is operated to release the locking element, so that the opening and closing angle of the clamping unit is fixed; The clamping unit comprises at least one pair of clamping arms, a base and a rotating arm; the clamping arms are pivotally connected to the base so as to rotate along the pivot point on the base to change the opening and closing angle between the clamping arms; One end of the rotating arm is pivotally connected to the middle of the clamping arm, and the other end is pivotally connected to the combined locking unit; A groove corresponding to the clamping arm and extending in the axial direction is arranged on the outer peripheral side of the base; the other end of the rotating arm is pivotally connected to the combined locking unit and can swing in the groove; The locking element in the combined locking unit comprises a chassis and at least one pair of locking arms, the locking arms are fixedly connected to the chassis and extend along the axis of the chassis; each locking arm comprises two locking rods arranged opposite to each other, the locking rods are installed in the grooves and can slide along the axis of the grooves, and at least one surface of the end of the locking rod away from the chassis is provided with a toothed structure engaged with the end surface of the groove; The release element includes a disengagement rod corresponding to the locking rod; when the medical device is in an unlocked state, the locking rod abuts against the disengagement rod to allow the locking rod to slide in the groove; when the medical device is in a locked state, the locking rod is separated from the disengagement rod, the locking rod returns to its original shape, and its toothed structure is engaged with the end face of the groove; The driving component includes a driving rod, the end of which is threadedly connected to the center hole of the chassis; The release element also includes a release base plate, a release rod is arranged on one side of the release base plate, and a release tube extending along the axis is arranged on the other side of the release base plate; the driving rod passes through the release tube and the release base plate in sequence and is threadedly connected to the chassis.

2. The medical device according to claim 1, characterized in that: A through hole is arranged in the middle of the locking rod, and the end of the rotating arm is rotatably connected in the through hole, so that the driving component drives the chassis to move to drive the rotating arm to swing in the groove.

3. The medical device according to claim 1 or 2, characterized in that: The locking rod is made of shape memory material.

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