Loading structure for loading heart valve stent and surgical instrument

Abstract

The utility model provides a loading structure for loading a heart valve stent and a surgical instrument, and the loading structure comprises a matching sleeve which is provided with a matching hole used for being movably matched with a transmission shaft of the surgical instrument; the accommodating body is arranged on the outer surface of the matching sleeve, and an accommodating space formed between the accommodating body and the matching sleeve is used for accommodating a heart valve stent; wherein when the loading structure loaded with the heart valve stent moves to form a first matching position with the fixed seat, the heart valve stent is mounted on the fixed seat. The utility model solves the technical problem that in the process of installing a heart valve support on a fixed seat, an operator is often in direct contact with the heart valve support so as to install the heart valve support on the fixed seat, but the heart valve support has the characteristic that the heart valve support is easy to deform due to the influence of temperature. Therefore, the sleeve pipe can not be smoothly accommodated in the sleeve pipe of the surgical instrument due to the fact that the sleeve pipe is deformed from a contraction state to an expansion state when receiving the temperature transmitted by the two hands of the human body.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, and in particular to a loading structure and a surgical instrument for loading a heart valve stent. Background Art

[0002] In recent years, minimally invasive solutions have been developed to facilitate catheter-based implantation of prostheses, such as transcatheter active valve prosthesis implantation. Typically, during transcatheter prosthesis implantation, the prosthesis is radially retracted onto a delivery catheter so that the prosthesis can be introduced into a body cavity, such as into the femoral artery, brachial artery, or aorta, or into a body cavity, such as a cardiac chamber (e.g., ventricle). The retracted configuration of the prosthesis on the delivery catheter can be maintained by a retaining sleeve positioned on the prosthesis. Using the delivery catheter, the prosthesis can be guided through the body cavity or body cavity to the desired implantation site. Once the prosthesis has traveled to the desired target site, the prosthesis can be deployed by removing the retaining sleeve and allowing the prosthesis to expand, for example, by balloon expansion or self-expansion.

[0003] Specifically, the above-mentioned prosthesis is, for example, a heart valve stent. Before the heart valve stent is delivered to the target position of the human body, it is often kept in a contracted state and arranged in a surgical instrument.

[0004] However, there is at least one of the following problems in the related technology: in the process of installing the heart valve stent on the fixing seat, the operator often directly touches the heart valve stent to install it on the fixing seat. However, since the heart valve stent is easily deformed due to the influence of temperature, it receives the temperature transmitted by the human body's hands and deforms from a contracted state to an open state, resulting in it being unable to be successfully accommodated in the sheath of the surgical instrument. Utility Model Content

[0005] The technical problem solved by the utility model is that during the process of installing the heart valve stent on the fixing seat, the heart valve stent is often installed on the fixing seat by direct contact of the operator. However, since the heart valve stent is easily deformed due to the influence of temperature, it receives the temperature transmitted by the human body's hands and deforms from a contracted state to an open state, resulting in the inability to be successfully accommodated in the sheath of the surgical instrument.

[0006] In order to solve the above problems, the utility model provides a loading structure for loading a heart valve stent, and the loading structure is used to transfer the heart valve stent to a fixed seat of a surgical instrument; the loading structure includes: a mating sleeve, the mating sleeve is provided with a mating hole for movably mating with a transmission shaft of the surgical instrument; a accommodating body, the accommodating body is provided on the outer surface of the mating sleeve, and the accommodating space formed between the accommodating body and the mating sleeve is used to accommodate the heart valve stent; wherein, when the loading structure loaded with the heart valve stent moves to form a first mating position with the fixed seat, the heart valve stent is installed to the fixed seat.

[0007] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: based on the actual loading situation of the loading structure, the heart valve stent is first placed in the accommodating space, and then the relative position of the loading structure relative to the fixed seat is adjusted so that the loading opening of the loading structure corresponding to the accommodating space is set toward the direction of the fixed seat, the matching sleeve is sleeved onto the transmission shaft, and moved along the axis of the transmission shaft in the direction close to the fixed seat, and finally fine-tuned to the first matching position, thereby achieving the effect of smoothly installing the heart valve stent to the fixed seat. During the movement of the heart valve stent, the operator directly applies thrust to the loading structure, which effectively avoids direct contact with the heart valve stent. On the one hand, it effectively avoids the risk of human body temperature directly affecting the heart valve stent and causing deformation due to temperature changes, thereby ensuring that a steady temperature environment is provided for the heart valve stent during the movement of the heart valve stent. On the other hand, since the heart valve stent is a precision structure, if the heart valve stent is directly touched by hand, the force applied by the hand to the heart valve stent is difficult to maintain consistent for a long time, which can easily cause damage to the structure of the heart valve stent. Therefore, by installing the heart valve stent into the accommodating space of the loading structure and through the cooperation of the matching sleeve and the transmission shaft, stable transportation of the heart valve stent is achieved.

[0008] In one example of the utility model, the containing body is provided with a first end and a second end arranged opposite to each other; the first end is provided with a connecting hole for accommodating a matching sleeve; a containing space is formed between the second end and the matching sleeve, and the second end has a loading opening for the heart valve stent to enter and exit.

[0009] In an example of the present invention, the second end is provided with a housing cavity corresponding to the housing space; the opening diameter of the housing cavity gradually increases in a direction from the first end to the second end.

[0010] In one example of the utility model, it includes: a second sleeve, which is coaxially arranged with the mating sleeve and is provided with an adjustment space for mating with the transmission shaft, and the second sleeve is arranged on a side of the first end away from the second end; a locking assembly, which is arranged on the surface of the second sleeve and is used to adjust the size of the adjustment space.

[0011] Compared with the prior art, the technical effect achieved by adopting this technical solution is: by setting a locking assembly on the second sleeve, the effect of adjusting the size of the adjustment space is achieved. Combined with the actual assembly of the loading structure on the transmission shaft, when the locking assembly adjusts the second sleeve to a locked state, it is fastened to the surface of the transmission shaft. At this time, the loading structure is fixed to the corresponding position of the transmission shaft, and when the second sleeve is adjusted to a loose state by the locking structure, the second sleeve can reciprocate on the surface of the transmission shaft. Therefore, combined with the cooperation of the above-mentioned locking assembly and the second sleeve, the effect of adapting the loading structure to transmission shafts of different diameters can be achieved.

[0012] In one example of the utility model, one side of the second sleeve is provided with an adjustment notch connected to the adjustment space; the locking assembly is arranged at a position of the second sleeve corresponding to the adjustment notch, and is used to tighten or loosen the adjustment diameter of the adjustment space corresponding to the second sleeve.

[0013] In an example of the present invention, the second sleeve and the locking assembly form a clamp structure.

[0014] In one embodiment of the present invention, the mating sleeve is slidably connected to the first end portion.

[0015] In an example of the utility model, a matching protrusion extending along the axial direction of the matching sleeve is provided on the surface of the matching sleeve; and a sliding groove matching with the matching protrusion is provided at the first end portion.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: through the mutual cooperation between the sliding groove and the mating protrusion, the relative rotation between the mating sleeve and the first end is effectively avoided, thereby affecting the smooth installation of the heart valve stent to the fixed seat.

[0017] On the other hand, the utility model further provides a surgical instrument, comprising: a loading structure as in any of the above examples.

[0018] Compared with the prior art, the technical effect achieved by adopting this technical solution is: it can achieve the technical effect corresponding to any of the above-mentioned technical solutions, which will not be repeated here.

[0019] In one example of the utility model, the fixing seat is provided with opposite clamping ends and elastic buckling ends; one end of the heart valve stent is provided with a clamping groove portion matching with the clamping end, and the other end is provided with a matching end adapted to the buckling spacing of the elastic buckling end.

[0020] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the effect of smoothly fixing the heart valve stent to the fixing seat is improved.

[0021] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0022] On the one hand, it effectively avoids the risk of human body temperature directly affecting the heart valve stent and causing deformation due to temperature changes, which ensures that a steady temperature environment is provided for the heart valve stent during the movement of the heart valve stent; on the other hand, since the heart valve stent is a precision structure, if the heart valve stent is directly touched by hand, the force applied by the hand to the heart valve stent is difficult to maintain consistent for a long time, which can easily cause damage to the structure of the heart valve stent. Therefore, by installing the heart valve stent into the accommodating space of the loading structure, and through the cooperation of the matching sleeve and the transmission shaft, stable transportation of the heart valve stent is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings to be used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic structural diagram of a loading structure for loading a heart valve stent provided in an embodiment of the utility model.

[0025] Figure 2 It is a structural schematic diagram of another loading structure.

[0026] Figure 3 A schematic diagram of the structure of surgical instruments.

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0028] Description of reference numerals:

[0029] 100, loading structure; 101, accommodating space; 10, matching sleeve; 20, accommodating body; 21, first end; 22, second end; 30, locking assembly; 40, second sleeve; 41, matching protrusion; 42, adjusting notch; 43, matching hole;

[0030] 200, surgical instrument; 210, fixing seat; 211, elastic buckling end; 212, clamping end; 220, transmission shaft. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1 , which is a schematic diagram of a loading structure 100 for loading a heart valve stent provided by an embodiment of the utility model. Figure 2-Figure 4 The loading structure 100 is used to transfer the heart valve stent to the fixing seat 210 of the surgical instrument 200; specifically, the loading structure 100 includes, for example, a matching sleeve 10 and a containing body 20. The matching sleeve 10 is provided with a matching hole 43 for movably matching with the transmission shaft 220 of the surgical instrument 200; the containing body 20 is provided on the outer surface of the matching sleeve 10, and the containing space 101 formed between the containing body 20 and the matching sleeve 10 is used to accommodate the heart valve stent; wherein, when the loading structure 100 loaded with the heart valve stent moves to form a first matching position with the fixing seat 210, the heart valve stent is installed on the fixing seat 210.

[0033] In combination with the actual loading situation of the loading structure 100, the heart valve stent is first placed in the accommodating space 101, and then the relative position of the loading structure 100 relative to the fixing seat 210 is adjusted so that the loading opening of the loading structure 100 corresponding to the accommodating space 101 is set toward the direction of the fixing seat 210, and the matching sleeve 10 is sleeved onto the transmission shaft 220, and moved along the axis of the transmission shaft 220 in the direction close to the fixing seat 210, and finally fine-tuned to move to the first matching position, thereby achieving the effect of smoothly installing the heart valve stent to the fixing seat 210. During the movement of the heart valve stent, the operator directly applies thrust to the loading structure 100, thereby effectively avoiding direct contact with the heart valve stent. On the one hand, it effectively avoids the risk of human body temperature directly affecting the heart valve stent and causing deformation due to temperature changes, thereby ensuring that a steady temperature environment is provided for the heart valve stent during the movement of the heart valve stent. On the other hand, since the heart valve stent is a precision structure, if the heart valve stent is directly touched by hand, the force applied by the hand to the heart valve stent is difficult to maintain consistent for a long time, which can easily cause damage to the structure of the heart valve stent. Therefore, by installing the heart valve stent into the accommodating space 101 of the loading structure 100, and through the cooperation of the matching sleeve 10 and the transmission shaft 220, stable transportation of the heart valve stent is achieved.

[0034] Preferably, the accommodating body 20 is provided with a first end 21 and a second end 22 which are arranged opposite to each other; the first end 21 is provided with a connecting hole for accommodating the matching sleeve 10; the accommodating space 101 is formed between the second end 22 and the matching sleeve 10, and the second end 22 has an opening for the heart valve stent to enter and exit.

[0035] Preferably, the second end portion 22 is provided with a receiving cavity corresponding to the receiving space 101 ; the opening diameter of the receiving cavity gradually increases in a direction from the first end portion 21 to the second end portion 22 .

[0036] Preferably, the loading structure 100 includes, for example, a second sleeve 40 and a locking assembly 30. The second sleeve 40 is coaxially arranged with the matching sleeve 10, and is provided with an adjustment space for matching with the transmission shaft 220, and the second sleeve 40 is arranged on a side of the first end 21 away from the second end 22; the locking assembly 30 is arranged on the surface of the second sleeve 40, and is used to adjust the size of the adjustment space.

[0037] Preferably, one side of the second sleeve 40 is provided with an adjustment notch 42 connected to the adjustment space; the locking assembly 30 is arranged at a position of the second sleeve 40 corresponding to the adjustment notch 42, and is used to tighten or loosen the adjustment diameter of the adjustment space enclosed by the second sleeve 40.

[0038] Preferably, the second sleeve 40 and the locking assembly 30 form a clamp structure.

[0039] Preferably, the mating sleeve 10 is slidably connected to the first end portion 21 .

[0040] Preferably, a matching protrusion 41 extending along the axial direction of the matching sleeve 10 is provided on the surface thereof; and a sliding groove matching with the matching protrusion 41 is provided at the first end portion 21 .

[0041] On the other hand, an embodiment of the utility model further provides a surgical instrument 200. Specifically, the surgical instrument 200 includes a loading structure 100 as in any of the above-mentioned examples. Correspondingly, it can achieve the technical effects in the examples corresponding to any of the above-mentioned loading structures 100, which will not be repeated here.

[0042] Preferably, the fixing seat 210 is provided with opposite clamping ends 212 and elastic buckling ends 211; one end of the heart valve stent is provided with a clamping groove portion matching with the clamping end 212, and the other end is provided with a matching end adapted to the buckling spacing of the elastic buckling end 211.

[0043] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A loading structure for loading a heart valve stent, characterized in that: The loading structure is used to transfer the heart valve stent to a fixing seat of a surgical instrument; the loading structure comprises: A matching sleeve, wherein the matching sleeve is provided with a matching hole for movably matching with the transmission shaft of the surgical instrument; A containing body, wherein the containing body is arranged on the outer surface of the matching sleeve, and a containing space formed between the containing body and the matching sleeve is used to contain the heart valve stent; When the loading structure loaded with the heart valve stent moves to form a first matching position with the fixing seat, the heart valve stent is installed on the fixing seat.

2. The loading structure according to claim 1, characterized in that: The containing body is provided with a first end and a second end which are arranged opposite to each other; The first end portion is provided with a connecting hole for accommodating the matching sleeve; The accommodating space is formed between the second end portion and the matching sleeve, and the second end portion has an opening for the heart valve stent to enter and exit.

3. The loading structure according to claim 2, characterized in that: The second end portion is provided with a receiving cavity corresponding to the receiving space; The opening diameter of the accommodating cavity gradually increases in a direction from the first end to the second end.

4. The loading structure according to claim 2, characterized in that: include: A second sleeve, the second sleeve is coaxially arranged with the matching sleeve, is provided with an adjustment space for matching with the transmission shaft, and the second sleeve is arranged on a side of the first end away from the second end; A locking assembly is arranged on the surface of the second sleeve and is used to adjust the size of the adjustment space.

5. The loading structure according to claim 4, characterized in that: One side of the second sleeve is provided with an adjustment notch communicating with the adjustment space; The locking assembly is arranged at a position of the second sleeve corresponding to the adjustment notch, and is used to tighten or loosen the adjustment aperture of the adjustment space correspondingly surrounded by the second sleeve.

6. The loading structure according to claim 4 or 5, characterized in that: The second sleeve and the locking assembly form a clamp structure.

7. The loading structure according to claim 2 or 3, characterized in that: The mating sleeve is slidably connected to the first end portion.

8. The loading structure according to claim 7, characterized in that: The surface of the matching sleeve is provided with a matching protrusion extending along the axial direction thereof; The first end portion is provided with a sliding groove that cooperates with the matching protrusion.

9. A surgical instrument, characterized in that: include: A loading structure as claimed in any one of claims 1 to 8.

10. The surgical instrument according to claim 9, characterized in that: The fixing seat is provided with opposite clamping ends and elastic buckling ends; One end of the heart valve stent is provided with a slot portion matched with the clamping end portion, and the other end is provided with a matching end portion adapted to the buckling interval of the elastic buckling end portion.

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