CN115644956B - Handheld device for medical instrument, assembling method of handheld device and medical instrument - Google Patents
Handheld device for medical instrument, assembling method of handheld device and medical instrument Download PDFInfo
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- CN115644956B CN115644956B CN202211451173.6A CN202211451173A CN115644956B CN 115644956 B CN115644956 B CN 115644956B CN 202211451173 A CN202211451173 A CN 202211451173A CN 115644956 B CN115644956 B CN 115644956B
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Abstract
The invention provides a handheld device, which comprises a handle, a proximal sheath and a distal sheath, wherein the proximal sheath and the distal sheath are used for enclosing the handle; the proximal sheath is provided with a first locking structure corresponding to the first operating part, and the distal sheath is provided with a second locking structure corresponding to the second operating part; the first operating member is moved toward the inside of the housing to an unlocking position under an external force, allowing the proximal portion of the handle to be inserted into and withdrawn from the proximal sheath; the second operating member moves towards the shell to an unlocking position under an external force, and the distal part of the handle is allowed to be inserted into the distal sheath and pulled out of the distal sheath; when the external force disappears, the first operating piece moves outwards to the original position of the shell and can be matched with the first locking structure, so that the proximal sheath is locked on the handle; when the external force disappears, the second operation part moves outwards to the original position of the shell and can be matched with the second locking structure, so that the distal sheath is locked on the handle. Ensuring stable assembly of the handle and the sterile enclosure.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a handheld device for a medical instrument, an assembling method of the handheld device and the medical instrument.
Background
Medical instruments as surgical tools in surgical procedures include clip appliers and staplers. Among them, clip appliers are often used to ligate blood vessels around target tissue to prevent bleeding; staplers are often used to perform cutting and stapling of tissue. The cost of the clip applier and the anastomat is high, and the clip applier and the anastomat on the market are usually disposable at present, namely, one set of clip applier is only used in one operation process, and one set of anastomat is only used in one operation process, so that the operation cost is high.
There is a split type medical apparatus with a handle and an operation working head detachably connected, and the split type medical apparatus can be a split type clip applier and a split type anastomat. In the split clip applier, a clip cabin component used as an operation working head is detachably connected with a handle, so that a surgeon can detach and combine different clip cabin components according to the operation process. In the split stapler, a nail bin assembly serving as an operation working head is detachably connected with a handle, so that a surgeon can disassemble and combine different nail bin assemblies according to the operation process. In order to reduce the use cost of split medical instruments, the handle is usually reused by sterilizing the handle with high-temperature steam at present and is matched with a disposable operation working head for use. However, the sterilization process of high-temperature steam sterilization is complex, the risk of infection caused by the fact that sterilization cannot be performed, and after the handle is sterilized by high-temperature steam for multiple times, the inside of the handle is affected with damp, the circuit inside the handle is seriously short-circuited and damaged, and the operation is not facilitated.
Therefore, in the prior art, a product is proposed in which the handle is packaged by a sterile shell, and the operation working head is connected with the handle by the sterile shell so that the handle controls the operation working head to work. The product realizes the reuse of the handle by packaging the handle through the sterile shell, and is matched with a disposable operation working head for use without high-temperature steam sterilization on the handle. The sterile enclosure, which typically includes a proximal sheath and a distal sheath, encloses the handle by inserting the handle into one sheath side first and then into the other sheath side, the connection of the two sheaths closing the sterile enclosure to completely enclose the handle within the sterile enclosure. However, since the handle is inserted into the sheath on one side, the sheath only supports the handle, and the handle is difficult to be stably held in the sheath on the one side, and the handle is liable to be shaken, and the insertion of the handle into the sheath on the other side is not facilitated, and the sterile case is liable to be contaminated by bacteria on the handle due to the unsmooth insertion.
Disclosure of Invention
Technical problem to be solved
In view of the problems in the art described above, the present invention is at least partially addressed. To this end, a first object of the invention is to propose a hand-held device for a medical instrument that ensures a stable assembly of the handle and the sterile housing.
A second object of the invention is to propose a method for assembling a hand-held device for a medical instrument as described above.
A third object of the invention is to propose a medical instrument with a hand-held device for a medical instrument as described above.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, the present invention provides a hand-held device for a medical instrument, comprising a handle, a proximal sheath for positioning a proximal portion of the handle, and a distal sheath for positioning a distal portion of the handle, a distal end of the proximal sheath being joined to a proximal end of the distal sheath to form a sterile enclosure for enclosing the handle; the handle is provided with a shell, a first operating piece which can move along the inner and outer direction of the shell is arranged on the near side part of the shell, and a second operating piece which can move along the inner and outer direction of the shell is arranged on the far side part of the shell; the proximal sheath is provided with a first locking structure corresponding to the first operating part, and the distal sheath is provided with a second locking structure corresponding to the second operating part;
the first operating member moves towards the shell to a proximal sheath unlocking position under the action of external force, and the proximal part of the handle is allowed to be inserted into and pulled out of the proximal sheath; the second operating member is moved towards the shell to a distal sheath unlocking position under the action of external force, and the distal part of the handle is allowed to be inserted into and pulled out of the distal sheath; when the external force action disappears, the first operating piece moves outwards to the original position of the shell and can be matched with the first locking structure, so that the proximal sheath is locked on the handle; when the external force disappears, the second operating part moves outwards to the original position of the shell and can be matched with the second locking structure, so that the distal sheath is locked on the handle.
Optionally, the first locking structure comprises a first limiting hole opened on the proximal sheath, and the second locking structure comprises a second limiting hole opened on the distal sheath; the first operating piece extends into the first limiting hole, so that the proximal sheath is locked on the handle; the second operating member extends into the second limiting hole to lock the distal sheath to the handle.
Optionally, the distal sheath is provided with a first bridging portion corresponding to the first limiting hole, the distal end of the proximal sheath is connected with the proximal end of the distal sheath, and the first bridging portion covers the first limiting hole; and/or the near side sheath is provided with a second lapping part corresponding to the second limiting hole, the far end of the near side sheath is connected with the near end of the far side sheath, and the second lapping part covers the second limiting hole.
Optionally, the distal sheath is provided with a third operating piece corresponding to the second limiting hole and capable of moving in the outer direction in the shell, and the third operating piece moves towards the shell under the action of external force to urge the second operating piece to move towards the shell to the distal sheath unlocking position; and/or a fourth operating piece capable of moving along the outer direction in the shell is arranged on the proximal sheath corresponding to the first limiting hole, and the fourth operating piece moves towards the shell under the action of external force to urge the first operating piece to move towards the shell to a proximal sheath unlocking position.
Optionally, the end of the first operating element away from the housing is provided with a first inclined wall from far to near and extending from the outside of the housing into the housing, and the end of the second operating element away from the housing is provided with a second inclined wall from near to far and extending from the outside of the housing into the housing; during the insertion process of the handle to the proximal sheath, the inner wall of the proximal sheath is contacted with the first inclined wall and presses the first operating piece to move towards the shell to the proximal sheath unlocking position; during insertion of the handle into the distal sheath, the inner wall of the distal sheath contacts the second sloped wall and presses the second operating member to move toward the housing to a distal sheath unlocking position.
Optionally, a partition plate assembly is arranged inside the distal sheath, and divides the distal sheath into a first cavity and a second cavity which are sequentially arranged from near to far, wherein the first cavity is used for placing the distal part of the handle, and the second cavity is used for placing the proximal part of the operation working head;
the distal sheath is provided with a third locking structure and a fifth operating piece which can move along the inner and outer directions of the shell; the fifth operating piece moves towards the inside of the shell to the unlocking position under the action of external force, so that the third locking structure can allow the proximal end part of the operation working head to be inserted into and pulled out of the second cavity; when the external force action disappears, the third locking structure enables the fifth operating piece to move outwards to the original position, and the fifth operating piece can be matched with the locking mechanism of the operation working head to enable the operation working head to be locked on the far sheath.
Optionally, the second locking structure comprises a second limiting hole formed in the distal sheath, and the second operating member extends into the second limiting hole to lock the distal sheath on the handle; the fifth operating piece is arranged corresponding to the second limiting hole, and moves to the first unlocking position and the second unlocking position in sequence towards the shell under the action of external force; the fifth operating piece is moved to the first unlocking position, so that the third locking structure can allow the proximal end part of the operation working head to be inserted into and pulled out of the second cavity; the fifth operating member moves to a second unlocking position, and the second operating member is urged to move towards the housing to a distal sheath unlocking position.
Optionally, the distal sheath comprises a rotating sheath and a main sheath which are sequentially arranged from far to near, the rotating sheath is connected to the main sheath in a circumferential rotating manner, the baffle plate assembly is located inside the main sheath, and a cavity located on the far side of the baffle plate assembly in the main sheath and an inner cavity of the rotating sheath jointly form a second cavity.
In a second aspect, the present invention provides a method of assembling a handheld device for a medical instrument, comprising: inserting the handle into the proximal sheath until the first operating member is matched with the first locking structure, and locking the proximal sheath on the handle; inserting the handle into the distal sheath until the second operating member engages the second locking structure to lock the distal sheath to the handle, wherein the distal end of the proximal sheath is coupled to the proximal end of the distal sheath to completely enclose the handle within the sterile enclosure; alternatively, the first and second electrodes may be,
inserting the handle into the distal sheath until the second operating member is matched with the second locking structure, and locking the distal sheath on the handle; the handle is then inserted into the proximal sheath until the first manipulating member engages the first locking structure to lock the proximal sheath to the handle, at which point the distal end of the proximal sheath is coupled to the proximal end of the distal sheath to completely enclose the handle within the sterile enclosure.
In a third aspect, the invention provides a medical instrument comprising a surgical working head and a hand-held device as described above for a medical instrument, the surgical working head being connected to a handle by a sterile housing.
(III) advantageous effects
The invention has the beneficial effects that:
through setting up first operating parts, first locking structure, second operating parts and second locking structure, no matter in the hand-held device assembling process the handle inserts left side sheath or right side sheath earlier, can both pass through the cooperation of first operating parts and first locking structure, perhaps the cooperation of second operating parts and second locking structure, realize the handle and insert the locking in the sheath earlier, guarantee that the handle is at the state stability of inserting in the sheath earlier, avoid the handle to insert the sheath earlier and take place to rock, and avoid inserting the sheath position earlier and break away from in the sheath when taking place to change, thereby make things convenient for follow-up handle to insert the sheath backward and insert, make the hand-held device equipment more rapid smooth. And when the handheld device is assembled, due to the matching of the first operating member and the first locking structure and the matching of the second operating member and the second locking structure, stress can be provided at the joint of the proximal sheath and the distal sheath, so that the sealing connection of the proximal sheath and the distal sheath is more stable.
Drawings
The invention is described with the aid of the following figures:
fig. 1 is an overall structural schematic view of a medical device according to embodiment 1 of the present invention;
FIG. 2 is an assembled schematic view of a hand-held device according to embodiment 1 of the invention;
FIG. 3 is an exploded schematic view of a hand-held device according to embodiment 1 of the invention;
FIG. 4 is a schematic sectional view of a hand-held device according to embodiment 1 of the invention;
FIG. 5 is a schematic side view of a proximal sheath according to example 1 of the present invention;
fig. 6 is a schematic cross-sectional view of a distal sheath according to example 1 of the present invention;
FIG. 7 is a schematic side view of a body sheath according to example 1 of the present invention;
FIG. 8 is a schematic side view of a rotating sheath according to example 1 of the present invention;
fig. 9 is a schematic view of the third locking structure and the operation working head according to the embodiment 1 of the invention.
[ description of reference ]
1: an operation working head;
11: an end effector; 12: a stationary housing; 13: a rotating housing; 14: a locking groove; 15: a plug-in unit;
2: a sterile enclosure;
21: a proximal sheath; 22: a distal sheath; 23: rotating the sheath; 24: a body sheath; 25: a locking lever;
211: a first limit hole;
221: a second limiting hole; 222: a first lap joint portion; 223: a third operating member; 224: a first mounting location; 225: a bulkhead assembly; 226: a guiding part; 227: a first acting part; 228: a second acting part; 229: a second mounting location;
231: a connecting member; 232: a clamping block; 233: a recessed portion; 234: a slot;
241: an annular groove; 242: a through hole;
251: a hook portion;
3: a handle;
31: a first operating member; 32: a second operating member; 33: a first sloped wall; 34: a second sloped wall.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present embodiments of the invention, which are illustrated in the accompanying drawings. Herein, "proximal" refers to the side closer to the operator, and "distal" refers to the side closer to the patient. As used herein, the terms "upper," "lower," "front," "rear," and the like are used with reference to the orientation of FIG. 1, wherein the proximal-to-distal direction is also the rear-to-front direction.
Example 1
As shown in fig. 1, the present embodiment provides a medical instrument, which includes a surgical working head 1 and a handheld device, wherein a proximal end of the surgical working head 1 is detachably mounted on a distal end of the handheld device, a distal end of the surgical working head 1 has an end effector 11 extending into a human body to perform a surgical operation, and the handheld device controls the surgical working head 1 to work.
Therein, as shown in fig. 1 and 2, the hand-held device comprises a sterile housing 2 and a handle 3 for selectively controlling the surgical working head 1. The sterile shell 2 comprises a proximal sheath 21 and a distal sheath 22, a third cavity for placing the proximal part of the handle 3 is formed inside the proximal sheath 21, and a second opening for the proximal part of the handle 3 to enter and exit the third cavity is arranged at the proximal end of the proximal sheath 21; the distal sheath 22 is internally provided with a first cavity for placing the distal part of the handle 3, and the distal end of the distal sheath 22 is provided with a first opening for the distal part of the handle 3 to enter and exit the first cavity; the first and second openings are selectively connectable to close the sterile enclosure 2 for enclosing the handle 3 within the first and second cavities. The operation working head 1 is connected with the handle 3 through the sterile shell 2, so that the handle 3 controls the operation working head 1 to work. So, through the setting of aseptic shell 2, can set up aseptic barrier between handle 3 and the environment outside aseptic shell 2, avoid having aseptic handle 3 to cause the pollution to the environment outside disposable aseptic operation working head 1 and aseptic shell 2, realize having aseptic handle 3's reuse, reduce the operation cost.
As shown in fig. 3 and 4, the handle 3 has a housing, a first operation member 31 provided on a proximal portion of the housing to be movable in an inner-outer direction of the housing, and a second operation member 32 provided on a distal portion of the housing to be movable in the inner-outer direction of the housing; the proximal sheath 21 is provided with a first locking structure corresponding to the first operating member 31, and the distal sheath 22 is provided with a second locking structure corresponding to the second operating member 32. The first operating member 31 moves toward the housing to a proximal sheath unlocking position under the action of an external force directed from the outside of the housing into the housing, allowing the proximal portion of the handle 3 to be inserted into and withdrawn from the proximal sheath 21; the second operating member 32 is moved inward toward the housing to a distal sheath unlocking position by an external force directed from outside the housing into the housing, allowing the distal portion of the handle 3 to be inserted into the distal sheath 22 and withdrawn from the distal sheath 22; when the external force from the outside of the shell to the inside of the shell disappears, the first operating piece 31 moves to the original position to the outside of the shell and can be matched with the first locking structure, so that the proximal sheath 21 is locked on the handle 3; when the external force from the outside of the housing to the inside of the housing is removed, the second operating member 32 moves to the original position to the outside of the housing and can be engaged with the second locking structure, so that the distal sheath 22 is locked on the handle 3.
The assembly process of the handheld device comprises the following steps: the handle 3 is inserted into one sheath side first and then the handle 3 is inserted into the other sheath side, the connection of the two sheaths closing the sterile enclosure 2 to completely enclose the handle 3 within the sterile enclosure 2. Set up first operating parts 31, first locking structure, second operating parts 32 and second locking structure, no matter handle 3 inserts left side sheath or right side sheath earlier, can both be through the cooperation of first operating parts 31 and first locking structure, perhaps the cooperation of second operating parts 32 and second locking structure, realize handle 3 and insert the locking in the sheath earlier, guarantee that handle 3 inserts the state stability in the sheath earlier, avoid handle 3 to insert the sheath earlier and take place to rock, and avoid inserting handle 3 and break away from the sheath when the sheath position changes earlier, thereby make things convenient for follow-up handle 3 to insert the sheath backward and insert, make the hand-held device equipment more rapid smooth. And when the assembly of the hand-held device is completed, stress is provided at the joint of the proximal sheath 21 and the distal sheath 22 due to the cooperation of the first operating member 31 and the first locking structure and the cooperation of the second operating member 32 and the second locking structure, so that the sealing connection of the proximal sheath 21 and the distal sheath 22 is more stable.
Preferably, as shown in fig. 3 and 4, the first locking structure comprises a first stopper hole 211 opened on the proximal sheath 21, and the second locking structure comprises a second stopper hole 221 opened on the distal sheath 22; the first operating member 31 extends into the first limiting hole 211, so that the proximal sheath 21 is locked on the handle 3; the second operating member 32 extends into the second stopper hole 221, so that the distal sheath 22 is locked to the handle 3. Thus, when the handle 3 is inserted into the proximal sheath 21 until the first operation member 31 corresponds to the first limiting hole 211, the first operation member 31 is no longer acted by an external force (i.e. a pressure applied to the first operation member 31 by the inner wall of the third cavity) from the outside of the shell to the inside of the shell, the first operation member 31 moves to the original position from the outside of the shell and extends into the first limiting hole 211, so that the proximal sheath 21 and the handle 3 are locked; when the handle 3 is inserted into the distal sheath 22 until the second operation member 32 corresponds to the second limiting hole 221, the second operation member 32 is no longer acted by an external force (i.e., a pressure applied to the second operation member 32 by the inner wall of the first cavity) from the outside of the housing to the inside of the housing, and the second operation member 32 moves to the original position to the outside of the housing and extends into the second limiting hole 221, so that the distal sheath 22 and the handle 3 are locked. The structure is simple.
Preferably, as shown in fig. 3 and 4, the end of the first operating member 31 away from the housing is provided with a first inclined wall 33 from far to near and extending from the outside of the housing to the inside of the housing, and the end of the second operating member 32 away from the housing is provided with a second inclined wall 34 from near to far and extending from the outside of the housing to the inside of the housing; during the insertion of the handle 3 into the proximal sheath 21, the inner wall of the proximal sheath 21 contacts the first inclined wall 33 and presses the first operating member 31 to move towards the housing to the proximal sheath unlocking position; during insertion of the handle 3 into the distal sheath 22, the inner wall of the distal sheath 22 contacts the second sloped wall 34 and presses the second operating member 32 to move towards the housing to the distal sheath unlocked position. By providing the first inclined wall 33 and the second inclined wall 34, an external force can be applied to the first operating member 31 via the inner wall of the proximal sheath 21 and an external force can be applied to the second operating member 32 via the inner wall of the distal sheath 22, thereby facilitating insertion of the handle 3 into the proximal sheath 21 and the distal sheath 22.
Further, in the present embodiment, the first operating member 31 and the second operating member 32 are both provided on the top of the housing. Further preferably, in this embodiment, the bottom proximal end of the distal sheath 22 is snap-connected with the bottom distal end of the proximal sheath 21. In this way, the snap connection of the proximal bottom end of the distal sheath 22 with the distal bottom end of the proximal sheath 21, in cooperation with the locking of the first operating member 31 to the proximal sheath 21 and the locking of the second operating member 32 to the distal sheath 22, provides stress at the connection of the proximal sheath 21 and the distal sheath 22, and further stabilizes the sealing connection of the proximal sheath 21 and the distal sheath 22.
The first limiting hole 211 is communicated with the inner environment and the outer environment of the near side sheath 21, the second limiting hole 221 is communicated with the inner environment and the outer environment of the far side sheath 22, when the handheld device is assembled, the first operating part 31 extends into the first limiting hole 211, the second operating part 32 extends into the second limiting hole 221, and as the first operating part 31 and the second operating part 32 are sterile, the first operating part 31 and the second operating part 32 may be exposed out of the sterile shell 2 through the first limiting hole 211 and the second limiting hole 221 to further pollute the environment outside the sterile shell 2. For this purpose, as shown in fig. 3 to 6, the distal sheath 22 is provided with a first bridging portion 222 corresponding to the first position-limiting hole 211, the first opening and the second opening are connected to close the sterile enclosure 2, and the first bridging portion 222 covers the first position-limiting hole 211 from the outside of the proximal sheath 21; a third operating member 223 capable of moving along the inner and outer direction of the shell is arranged on the outer wall of the distal sheath 22 corresponding to the second limit hole 221, and the third operating member 223 moves towards the shell under the action of external force directed from the outside of the shell to the inside of the shell to urge the second operating member 32 to move towards the inside of the shell to a distal sheath unlocking position; when the external force from outside the housing to inside the housing is removed, the third operating member 223 moves to the home position outside the housing. The first limiting hole 211 is covered by the first overlapping part 222, which is beneficial to building a sterile barrier to separate the first operation part 31 from the environment outside the sterile shell 2; controlling the unlocking and locking of the secondary operating member 32 by means of a third operating member 223 provided on the distal sheath 22 facilitates the establishment of a sterile barrier between the secondary operating member 32 and the environment outside the sterile housing 2; thereby preventing the first operating member 31 and the second operating member 32 from contaminating the environment outside the aseptic enclosure 2.
Further, in the present embodiment, as shown in fig. 6, the first bridging portion 222 protrudes proximally beyond the distal sheath 22; the outer wall of the distal sheath 22 is provided with a first mounting position 224, and the third operating member 223 is slidably connected to the first mounting position 224 along the inside and outside of the housing.
Optionally, the proximal sheath 21 is provided with a second overlapping portion corresponding to the second position-limiting hole 221, the first opening and the second opening are connected to close the sterile enclosure 2, and the second overlapping portion covers the second position-limiting hole 221 from the outside of the distal sheath 22. It is also advantageous to create a sterile barrier between the second operating member 32 and the environment outside the sterile enclosure 2.
Optionally, a fourth operating element capable of moving in the inner and outer direction of the housing is arranged on the outer wall of the proximal sheath 21 corresponding to the first limiting hole 211, and the fourth operating element moves towards the housing under the action of an external force directed from the outside of the housing into the housing to urge the first operating element 31 to move towards the inside of the housing to the proximal sheath unlocking position; when the external force from the outside of the shell to the inside of the shell disappears, the fourth operation piece moves to the original position to the outside of the shell. It is also advantageous to build up an aseptic barrier between the first operating member 31 and the environment outside the aseptic enclosure 2.
Preferably, as shown in fig. 3, 4 and 6, a baffle assembly 225 is arranged inside the distal sheath 22, and the baffle assembly 225 divides the inside of the distal sheath 22 into a first cavity and a second cavity which are arranged from proximal to distal, wherein the first cavity is used for placing the distal part of the handle 3, and the second cavity is used for placing the proximal part of the operation working head 1. The distal sheath 22 is provided with a third locking structure and a fifth operation member capable of moving in the housing inner-outer direction; the fifth operating piece moves towards the inside of the shell to an unlocking position under the action of external force pointing from the outside of the shell to the inside of the shell, so that the third locking structure can allow the proximal end part of the operation working head 1 to be inserted into and pulled out of the second cavity; when the external force action from the outside of the shell to the inside of the shell disappears, the third locking structure causes the fifth operating piece to move to the original position to the outside of the shell and can be matched with the locking mechanism of the operation working head 1, so that the operation working head 1 is locked on the far sheath 22.
Thus, by arranging the partition plate assembly 225, a sterile barrier can be built between the first cavity (namely the cavity for accommodating the handle 3) and the second cavity, so that the second cavity (namely the disposable sterile operation working head 1) is prevented from being polluted by the sterile handle 3, and the sterile installation of the operation working head 1 in the second cavity is ensured; the operation working head 1 is locked, installed and unlocked and disassembled in the second cavity by arranging the fifth operating piece and the third locking structure.
Further preferably, in the present embodiment, the third operating element 223 and the fifth operating element are the same operating element, and the fifth operating element moves to the first unlocking position and the second unlocking position in sequence towards the inside of the housing under the action of an external force directed from the outside of the housing to the inside of the housing; the fifth operating piece is moved to the first unlocking position, so that the third locking structure can allow the proximal end part of the operation working head 1 to be inserted into and pulled out of the second cavity; movement of the fifth operating member to the second unlocked position causes the second operating member 32 to move inwardly of the housing to the distal sheath unlocked position. Therefore, only one operation piece is needed to control the unlocking of the operation working head 1 and the unlocking of the distal sheath 22, and the structure is simple.
Further preferably, in this embodiment, a guiding portion 226 is disposed on an inner wall of the second cavity, and the guiding portion 226 forms a bidirectional automatic guiding for the surgical working head 1 in the process that the surgical working head 1 is inserted into the second cavity; the locking mechanism and the third locking structure can be matched on the basis of bidirectional automatic alignment. Therefore, the operation working head 1 is convenient to lock and install in the second cavity.
As shown in fig. 1 and 9, the distal end of the surgical working head 1 has a fixed housing 12 and a rotary housing 13, which are arranged in sequence from near to far, the fixed housing 12 is used for locking and installing the surgical working head 1 in the second cavity, and the rotary housing 13 is used for driving the end effector 11 to rotate. Preferably, as shown in fig. 6 to 8, the distal sheath 22 includes a rotating sheath 23 and a main sheath 24 arranged in sequence from the distal end to the proximal end, the distal end of the main sheath 24 is inserted into the proximal end of the rotating sheath 23, and the rotating sheath 23 is circumferentially rotatably connected to the main sheath 24; the diaphragm assembly 225 is located inside the body sheath 24, and the cavity in the body sheath 24 distal to the diaphragm assembly 225 and the internal cavity of the rotating sheath 23 together constitute a second cavity. In this manner, the stationary housing 12 may be received within the body sheath 24 within the cavity distal to the diaphragm assembly 225 to facilitate engagement of the third locking structure with the stationary housing 12; the distal end of the rotating shell 13 can be accommodated in the cavity inside the rotating sheath 23, and the inner wall of the rotating sheath 23 can form a circumferentially fixed and axially sliding connection with the rotating shell, so that the rotating piece is driven to rotate by rotating the rotating sheath 23, and the surgical working head 1 is not hindered from being detached from the distal sheath 22.
Further preferably, as shown in fig. 6 and fig. 8, at least two connecting members 231 are arranged in the inner cavity of the rotating sheath 23 and are uniformly distributed around the rotating sheath 23 in the axial direction, the connecting members 231 extend in the proximal and distal directions, a first end of each connecting member 231 is fixedly connected with a proximal end of the inner wall of the rotating sheath 23, a second end of each connecting member 231 is a free end and can be elastically deformed in the inner and outer directions of the housing, and a second end of each connecting member 231 is provided with a fixture block 232 extending to the center of the inner cavity of the rotating sheath 23; an annular groove 241 is formed in the outer wall of the far end of the main body sheath 24 corresponding to the fixture block 232; during insertion of body sheath 24 into rotating sheath 23, the outer wall of body sheath 24 contacts catches 232 and presses second end of connector 231 to elastically deform towards the outside of the housing, allowing body sheath 24 to continue to be inserted into rotating sheath 23 until catches 232 fall into annular grooves 241. Further, after the latch 232 is dropped into the annular groove 241, the second end of the connection member 231 is elastically restored to the original position. By arranging the connecting piece 231 and matching the connecting piece 231 with the annular groove 241, the rotating sheath 23 and the main body sheath 24 can be connected in a circumferential rotation manner while the rotating sheath 23 and the main body sheath 24 are convenient to assemble.
Further, in the present embodiment, the inner cavity of the rotating sheath 23 is provided with four connecting members 231 which are evenly distributed around the rotating sheath 23 in the axial direction. Further, in the present embodiment, the proximal end wall of the latch 232 is a slope extending from near to far and from the outside of the housing to the inside of the housing; during the insertion of the main body sheath 24 into the rotating sheath 23, the outer wall of the main body sheath 24 contacts the inclined surface of the latch 232 and presses the second end of the connecting member 231 to elastically deform toward the outside of the housing, allowing the main body sheath 24 to continue to be inserted into the rotating sheath 23 until the latch 232 falls into the annular groove 241.
Further, the outer surface of the rotating sheath 23 is formed with a smooth pear-shaped curved surface, and the proximal outer surface of the rotating sheath 23 is projected relative to the distal outer surface of the rotating sheath 23, which is provided to facilitate the operator to hold the rotating sheath 23. Furthermore, a concave part 233 can be further disposed on the outer surface of the proximal end of the rotating sheath 23, so that an operator can conveniently stir the rotating sheath 23 to rotate.
Preferably, as shown in fig. 4 and 9, the distal sheath 22 is provided with a through hole 242 communicating the second cavity with the external environment of the distal sheath 22, and the third locking structure includes an elastic member (not shown in the figure) and a locking rod 25 extending in the proximal-distal direction; the middle part of the locking rod 25 is rotatably connected to a second mounting position 229 arranged on the outer wall of the distal sheath 22, the proximal end of the locking rod 25 is positioned outside the distal sheath 22, the proximal end of the locking rod 25 is connected with the distal sheath 22 through an elastic member, the distal end of the locking rod 25 is provided with a bent hook part 251 facing the inside of the distal sheath 22 and used for being matched with a locking mechanism, the bent hook part 251 is arranged corresponding to the through hole 242, and a fifth operating member is connected with the proximal end of the locking rod 25 in a linkage manner; by rotating the lock lever 25, the hook portion 251 can enter and exit the through hole 242; when the fifth operating member is in the home position, the elastic member is in the pre-compressed state, and the hook portion 251 extends into the second cavity through the through hole 242.
Thus, the fifth operation element moves towards the inside of the shell under the action of external force pointing from the outside of the shell to the inside of the shell, the locking rod 25 is urged to move towards the inside of the shell, and then the hook part 251 is driven to move towards the outside of the shell, the fifth operation element moves to the first unlocking position under the action of external force pointing from the outside of the shell to the inside of the shell, the hook part 251 moves out of the second cavity, and the proximal end part of the operation working head 1 is allowed to be inserted into and pulled out of the second cavity; when the external force from the outside of the housing to the inside of the housing disappears, the restoring force of the elastic member urges the proximal end of the locking lever 25 to move to the original position to the outside of the housing, and further drives the fifth operating member to move to the original position to the outside of the housing, and the fifth operating member passes through the through hole 242 to extend into the second cavity to be matched with the locking mechanism, so that the surgical working head 1 is locked on the distal sheath 22.
Further, in the present embodiment, the fifth operating member has a first acting portion 227 and a second acting portion 228 arranged from proximal to distal, the second acting portion 228 is linked with the proximal end of the locking lever 25 in an interlocking manner, the fifth operating member is moved to the second unlocking position, and the first acting portion 227 urges the second operating member 32 to move toward the housing to the distal sheath unlocking position.
Further, in the present embodiment, the first mounting position 224 is provided with a slide groove extending in the case inside and outside direction, and the side portion of the fifth operating element has a slider, and the slide groove engages with the slider so that the fifth operating element can move in the case inside and outside direction.
Preferably, the proximal end of the rotating sheath 23 is sleeved on the distal end of the main sheath 24, a cavity in the main sheath 24 located on the distal side of the partition plate assembly 225 and the distal end cavity of the rotating sheath 23 together form a second cavity, a fourth cavity is arranged between the proximal end of the rotating sheath 23 and the main sheath 24, and the locking rod 25 is accommodated in the fourth cavity; the fifth operating member is located proximal to the rotating sheath 23.
Further, in the present embodiment, the locking mechanism includes a locking groove 14 provided on an outer surface of the fixed housing 12, and the locking groove 14 is locked in cooperation with the bent hook portion 251.
Further, in the present embodiment, the insertion piece 15 is provided on the rotary housing 13, the insertion groove 234 is provided on the inner wall of the rotary sheath 23, and the insertion piece 15 and the insertion groove 234 are inserted to form a circumferential lock of the rotary sheath 23 and the rotary housing 13. The circumferential linkage of the rotating sheath 23 and the rotating shell 13 is realized.
It should be noted that the drawings of the present embodiment illustrate a clip applier as an example, but the present embodiment is not limited to the clip applier, and it is conceivable that the handheld device provided in the present embodiment is also applicable to other medical instruments such as staplers.
Example 2
The embodiment provides an assembling method of the handheld device described in embodiment 1, including the following steps:
the handle 3 is inserted into the proximal sheath 21 until the first operating member 31 cooperates with the first locking structure to lock the proximal sheath 21 to the handle 3; handle 3 is then inserted into distal sheath 22 until second manipulating member 32 engages the second locking structure to lock distal sheath 22 to handle 3, at which time the distal end of proximal sheath 21 is coupled to the proximal end of distal sheath 22 to close sterile enclosure 2 to completely enclose handle 3 within sterile enclosure 2.
Alternatively, the handle 3 is inserted into the distal sheath 22 until the second operating member 32 engages with the second locking structure, thereby locking the distal sheath 22 to the handle 3; handle 3 is then inserted into proximal sheath 21 until first manipulating member 31 engages the first locking structure, locking proximal sheath 21 to handle 3, at which time the distal end of proximal sheath 21 is coupled to the proximal end of distal sheath 22 closing sterile enclosure 2 to completely enclose handle 3 within sterile enclosure 2.
So assembled, it is convenient and quick, and facilitates the connection stability between the proximal sheath 21 and the distal sheath 22.
Example 3
The embodiment is improved on the basis of embodiment 1, and specifically comprises the following steps:
a first sterile film is arranged on the proximal sheath corresponding to the first limiting hole 211, a second sterile film is arranged on the distal sheath corresponding to the second limiting hole 221, the first sterile film seals the first limiting hole 211, and the second sterile film seals the second limiting hole 221; the first operation part 31 extends into the first limiting hole 211, the first sterile film covers the first operation part 31, and a sterile barrier is built between the first operation part 31 and the environment outside the sterile shell 2; the second operating element 32 extends into the second limiting hole 221, and the second sterile film covers the second operating element 32, so that a sterile barrier is established between the second operating element 32 and the environment outside the sterile enclosure 2.
It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.
Claims (9)
1. A hand-held device for a medical instrument,
comprises a handle (3), a near side sheath (21) used for placing the near side part of the handle (3) and a far side sheath (22) used for placing the far side part of the handle (3), wherein the far end of the near side sheath (21) is connected with the near end of the far side sheath (22) to form a sterile shell (2) used for enclosing the handle (3);
the handle (3) is provided with a shell, a first operating piece (31) capable of moving along the inner and outer directions of the shell is arranged on the near side part of the shell, and a second operating piece (32) capable of moving along the inner and outer directions of the shell is arranged on the far side part of the shell; the proximal sheath (21) is provided with a first locking structure corresponding to the first operating member (31), and the distal sheath (22) is provided with a second locking structure corresponding to the second operating member (32);
the first operating member (31) moves towards the shell to a proximal sheath unlocking position under the action of external force, and allows the proximal part of the handle (3) to be inserted into the proximal sheath (21) and pulled out of the proximal sheath (21); the second operating member (32) moves towards the shell to a far sheath unlocking position under the action of external force, and the distal part of the handle (3) is allowed to be inserted into the far sheath (22) and pulled out of the far sheath (22);
when the external force action disappears, the first operating piece (31) moves to the original position outwards from the shell and can be matched with the first locking structure to lock the proximal sheath (21) on the handle (3); when the external force action disappears, the second operating piece (32) moves to the original position outwards from the shell and can be matched with the second locking structure to lock the distal sheath (22) on the handle (3);
a baffle assembly (225) is arranged inside the distal sheath (22), the baffle assembly (225) divides the interior of the distal sheath (22) into a first cavity and a second cavity which are sequentially arranged from near to far, the first cavity is used for placing the distal part of the handle (3), and the second cavity is used for placing the proximal end part of the operation working head;
the distal sheath (22) is provided with a third locking structure and a fifth operating piece which can move along the outer direction in the shell; the fifth operating piece moves towards the inside of the shell to the unlocking position under the action of external force, so that the third locking structure can allow the proximal end part of the operation working head to be inserted into and pulled out of the second cavity; when the external force action disappears, the third locking structure enables the fifth operating piece to move outwards to the original position, and the fifth operating piece can be matched with the locking mechanism of the operation working head, so that the operation working head is locked on the far sheath (22).
2. The handheld device for a medical instrument of claim 1,
the first locking structure comprises a first limiting hole (211) arranged on the proximal sheath (21), and the second locking structure comprises a second limiting hole (221) arranged on the distal sheath (22);
the first operating piece (31) extends into the first limiting hole (211) to enable the near side sheath (21) to be locked on the handle (3); the second operating piece (32) extends into the second limiting hole (221) to lock the distal sheath (22) on the handle (3).
3. The handheld device for a medical instrument of claim 2,
the far-side sheath (22) is provided with a first lapping part (222) corresponding to the first limiting hole (211), the far end of the near-side sheath (21) is connected with the near end of the far-side sheath (22), and the first lapping part (222) covers the first limiting hole (211); and/or the presence of a gas in the gas,
the near side sheath (21) is provided with a second lapping part corresponding to the second limiting hole (221), the far end of the near side sheath (21) is connected with the near end of the far side sheath (22), and the second lapping part covers the second limiting hole (221).
4. The handheld device for a medical instrument of claim 2,
the distal sheath (22) is provided with a third operating piece (223) which can move along the outer direction in the shell corresponding to the second limiting hole (221), and the third operating piece (223) moves towards the shell under the action of external force to urge the second operating piece (32) to move towards the shell to a distal sheath unlocking position; and/or the presence of a gas in the gas,
the proximal sheath (21) is provided with a fourth operation piece which can move along the outer and inner directions of the shell corresponding to the first limiting hole (211), and the fourth operation piece moves towards the shell under the action of external force to urge the first operation piece (31) to move towards the shell to a proximal sheath unlocking position.
5. The handheld device for a medical instrument of claim 1,
the end part of the first operating part (31) far away from the shell is provided with a first inclined wall (33) which extends from far to near and from the outside of the shell to the inside of the shell, and the end part of the second operating part (32) far away from the shell is provided with a second inclined wall (34) which extends from near to far and from the outside of the shell to the inside of the shell;
during the process that the handle (3) is inserted into the proximal sheath (21), the inner wall of the proximal sheath (21) is contacted with the first inclined wall (33) and presses the first operating member (31) to move towards the shell to a proximal sheath unlocking position; during the insertion process of the handle (3) to the distal sheath (22), the inner wall of the distal sheath (22) is contacted with the second inclined wall (34) and presses the second operating member (32) to move towards the shell to a distal sheath unlocking position.
6. The handheld device for a medical instrument of claim 1,
the second locking structure comprises a second limiting hole (221) formed in the distal sheath (22), and the second operating piece (32) extends into the second limiting hole (221) to enable the distal sheath (22) to be locked on the handle (3);
the fifth operating piece is arranged corresponding to the second limiting hole (221), and moves towards the shell to a first unlocking position and a second unlocking position in sequence under the action of external force; the fifth operating piece moves to the first unlocking position, so that the third locking structure can allow the proximal end part of the surgical working head to be inserted into and pulled out of the second cavity; the fifth operating member moves to a second unlocking position, which causes the second operating member (32) to move towards the housing to a distal sheath unlocking position.
7. The handheld device for a medical instrument of claim 1,
the far-side sheath (22) comprises a rotary sheath (23) and a main body sheath (24) which are sequentially arranged from far to near, the rotary sheath (23) is connected to the main body sheath (24) in a circumferential rotating mode, the baffle plate assembly (225) is located inside the main body sheath (24), and a cavity located on the far side of the baffle plate assembly (225) in the main body sheath (24) and a cavity inside the rotary sheath (23) form a second cavity together.
8. A method of assembling a handset for a medical instrument according to any one of claims 1 to 7, comprising:
the handle (3) is inserted into the proximal sheath (21) until the first operating part (31) is matched with the first locking structure, and the proximal sheath (21) is locked on the handle (3); inserting the handle (3) into the distal sheath (22) until the second operating member (32) engages the second locking structure to lock the distal sheath (22) to the handle (3), wherein the distal end of the proximal sheath (21) is coupled to the proximal end of the distal sheath (22) to completely enclose the handle (3) within the sterile enclosure; alternatively, the first and second electrodes may be,
the handle (3) is inserted into the distal sheath (22) until the second operating member (32) is matched with the second locking structure, and the distal sheath (22) is locked on the handle (3); the handle (3) is then inserted into the proximal sheath (21) until the first operating member (31) engages the first locking structure to lock the proximal sheath (21) to the handle (3), at which time the distal end of the proximal sheath (21) is coupled to the proximal end of the distal sheath (22) to completely enclose the handle (3) within the sterile enclosure.
9. A medical instrument, characterized by comprising a surgical working head (1) and a hand-held device for a medical instrument according to any of claims 1 to 7, the surgical working head (1) being connected to a handle (3) by means of a sterile housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211451173.6A CN115644956B (en) | 2022-11-20 | 2022-11-20 | Handheld device for medical instrument, assembling method of handheld device and medical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211451173.6A CN115644956B (en) | 2022-11-20 | 2022-11-20 | Handheld device for medical instrument, assembling method of handheld device and medical instrument |
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| CN115644956A CN115644956A (en) | 2023-01-31 |
| CN115644956B true CN115644956B (en) | 2023-03-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100500237C (en) * | 2001-12-28 | 2009-06-17 | 贝克顿迪肯森公司 | Medical needle component part |
| US9216013B2 (en) * | 2013-02-18 | 2015-12-22 | Covidien Lp | Apparatus for endoscopic procedures |
| WO2016057225A1 (en) * | 2014-10-07 | 2016-04-14 | Covidien Lp | Handheld electromechanical surgical system |
| EP4099920A1 (en) * | 2020-12-02 | 2022-12-14 | Cilag GmbH International | Powered surgical instruments with smart reload with separately attachable exteriorly mounted wiring connections |
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