Shell assembly for medical instrument and medical instrument

Abstract

The utility model provides a shell assembly for a medical instrument and the medical instrument. A medical device includes a power unit. The shell assembly comprises a shell main body part which comprises a first half shell and a second half shell which are rotationally connected with each other; the first half shell is rotationally connected with the second half shell through the connecting part, so that a shell cavity for accommodating the power unit is formed when the first half shell and the second half shell are in butt joint; the connecting part comprises a damping part, the damping part comprises a first matching part arranged on the first half shell and a second matching part arranged on the second half shell, and at least part of the first matching part is in concave-convex fit with at least part of the second matching part; damping force is formed at at least one relative position in the relative rotation process of the first half shell and the second half shell. Through the design of the damping part in the shell assembly, the first half shell and the second half shell can be kept relatively fixed at any position within the relative rotation range, and the sterile surface can be prevented from being polluted, the hands of an operator can be prevented from being clamped, and the operator can be prevented from being opened excessively accidentally.

Description

Technical Field

[0001] The utility model relates to a shell component for medical equipment and the medical equipment. Background Art

[0002] Many medical devices, such as staplers, are currently required to quickly and accurately manipulate tissue during surgery. The handle of an existing electric stapler consists of a protective housing and a power unit. The disposable protective housing seals the power unit. The power unit is a reusable component containing electronic components such as circuit boards and batteries, making it incompatible with sterilization methods such as ethylene oxide or high-temperature steam. The sterile protective housing is a disposable component. It forms a sterile barrier, preventing bacteria from escaping the power unit and contaminants from the housing after surgical procedures from being transferred to the reusable power unit. However, in existing electric staplers, the protective housing cannot remain secure during the opening process. This can easily cause one half of the housing to accidentally slip and close during assembly of the power unit, contaminating the sterile surface and / or pinching the operator's hand. Furthermore, the protective housing can easily open and close excessively, potentially damaging the housing, affecting its use or even rendering it useless. Therefore, addressing the technical issue of the protective housing failing to remain secure during the opening process is imperative. Utility Model Content

[0003] At least one embodiment of the present invention provides a shell assembly for a medical device, wherein the medical device includes a power unit, and the shell assembly includes: a shell body portion, including a first half shell and a second half shell that are rotatably connected to each other; a connecting portion, wherein the first half shell is rotatably connected to the second half shell through the connecting portion, so that the first half shell and the second half shell form a shell cavity for accommodating the power unit when docked; the connecting portion includes a damping portion, wherein the damping portion includes: a first matching portion provided on the first half shell and a second matching portion provided on the second half shell, at least a portion of the first matching portion is concave-convexly adapted to at least a portion of the second matching portion, so as to form a damping force at at least one relative position during the relative rotation of the first half shell and the second half shell.

[0004] For example, in a shell assembly provided by at least one embodiment of the present invention, the first half shell has a first end and a second end opposite to each other along the length direction of the handle, the second half shell has a first end and a second end opposite to each other along the length direction of the handle, the first matching portion is arranged on the first end of the first half shell, and the second matching portion is arranged on the first end of the second half shell.

[0005] For example, in a shell assembly provided by at least one embodiment of the present invention, the first mating portion includes an arcuate concave wall, and the second mating portion includes a first column portion, and the arcuate concave wall and the first column portion match to achieve the concave-convex adaptation; the concave-convex adaptation of the arcuate concave wall and the first column portion includes: an interference fit at the at least one relative position when the second end of the first half shell and the second end of the second half shell are far away from or close to each other, and a clearance fit when the first half shell and the second half shell are docked.

[0006] For example, in a shell assembly provided by at least one embodiment of the present invention, the first mating portion also includes a second column portion, the arc-shaped concave wall includes a first section of the arc-shaped wall and a second section of the arc-shaped wall, and the second column portion is located between the first section of the arc-shaped wall and the second section of the arc-shaped wall along the central axis of the connecting portion; the second mating portion also includes a first gap for the second column portion to be embedded, and the first column portion includes: a first section of the column that is concavely and convexly adapted to the first section of the arc-shaped wall and a second section of the column that is concavely and convexly adapted to the second section of the arc-shaped wall, and the first gap is located between the first section of the column and the second section of the column along the central axis of the connecting portion; the second column portion is coaxially arranged with the first column portion.

[0007] For example, in a shell assembly provided by at least one embodiment of the present invention, the connecting part also includes a fixing pin, the axial direction of the fixing pin is parallel or coaxial with the central axis of the connecting part; the fixing pin connects the first end of the first half shell and the first end of the second half shell, and the first half shell and the second half shell are rotatable around the fixing pin; the first column part and the second column part are respectively provided with through holes for the fixing pin to pass through, so as to realize the rotational connection between the first end of the first half shell and the first end of the second half shell.

[0008] For example, in a shell assembly provided by at least one embodiment of the present invention, the first section of the column and / or the second section of the column respectively have a column body with a circular cross-section perpendicular to the central axis of the connecting portion and a raised portion that protrudes radially outward relative to the column body, wherein the raised portion matches the arc-shaped concave wall to form the interference fit or the clearance fit.

[0009] For example, in a housing assembly provided by at least one embodiment of the present invention, the surface of the raised portion has uneven texture, and / or the surface of the arc-shaped concave wall has uneven texture.

[0010] For example, in a housing assembly provided by at least one embodiment of the present invention, the profile of the cross section of the raised portion perpendicular to the central axis of the connecting portion is an arc-shaped curve with a gradually changing radius to form the interference fit or the clearance fit.

[0011] For example, in a shell assembly provided by at least one embodiment of the present invention, the raised portion is located at one end of the first section of the column and / or the second section of the column close to the first gap along the central axis of the connecting portion; when the radius of the cross-section of the raised portion is greater than the radius of the arc-shaped concave wall, the interference fit is formed, and when the radius of the cross-section of the raised portion is equal to or less than the radius of the arc-shaped concave wall, the clearance fit is formed.

[0012] For example, in a shell assembly provided by at least one embodiment of the present invention, the central angle of the arc-shaped concave wall is less than 105°. During the relative rotation of the first half shell and the second half shell, when the central angle of the raised portion is greater than or equal to 0° and less than or equal to 105°, the arc-shaped concave wall is adapted to the first column portion to form the clearance fit; when the central angle of the raised portion is greater than 105° and less than or equal to 120°, the arc-shaped concave wall is adapted to the first column portion to form the interference fit.

[0013] For example, in a housing assembly provided in at least one embodiment of the present invention, the medical device is an electric stapler.

[0014] Compared with the prior art, the beneficial effects of at least one embodiment of the present invention include at least the following: through the ingenious design of the damping portion in the shell assembly, the first half shell and the second half shell can be kept relatively fixed at any set position within the range of relative rotation. Therefore, when the operator installs and / or removes the power unit in the medical device, the shell assembly is prevented from being closed uncontrollably, thereby avoiding contamination of the sterile surface and pinching of the operator's hand, and avoiding adverse consequences caused by accidental excessive opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A top view of a housing assembly for a medical device provided in some embodiments of the present invention.

[0017] Figure 2 Schematic diagram of a housing assembly for a medical device provided in some embodiments of the present invention.

[0018] Figure 3 For the utility model Figure 2A magnified partial cross-sectional view of .

[0019] Figure 4 Schematic diagram of the housing assembly provided in some embodiments of the present invention in the middle open position.

[0020] Figure 5-Figure 6 Schematic diagram of the housing assembly provided in some embodiments of the present invention in the maximum open position, Figure 6 For the utility model Figure 5 A magnified partial cross-sectional view of .

[0021] Figure 7 Schematic diagram of a first half shell provided for some embodiments of the present invention.

[0022] Figure 8 A schematic diagram of a second half shell provided in some embodiments of the present invention;

[0023] Figure 9 A partial cross-sectional view of a first half shell provided for some embodiments of the present invention;

[0024] Figure 10 A partial cross-sectional view of a second half shell provided in some embodiments of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present invention.

[0027] The terms "first", "second", and similar terms in the embodiments of the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "one", "an" or "the" do not indicate quantity limitation, but indicate the existence of at least one. Similarly, the terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. In the embodiments of the present disclosure, the term "about" used in the text means that the numerical value is approximate and a small change will not significantly affect the practice of the aspects disclosed in the present disclosure, and the embodiments of the present disclosure do not have the numerical limitation indicated.

[0028] In surgical treatment, various anastomosis devices are widely used, such as skin anastomosis device, digestive tract (esophagus, gastrointestinal tract, etc.) circular anastomosis device, etc. These anastomosis devices are medical devices used to replace traditional manual suturing. Due to the development of modern technology and improvement of manufacturing technology, various anastomosis devices used in clinical practice have the advantages of quick and accurate suturing, simple operation, less bleeding, few side effects and surgical complications, etc. The anastomosis device can be used to remove the lesion.

[0029] The present utility model provides a new shell assembly scheme to solve the problem that the disposable shell cannot be fixed during the opening process. The present utility model provides a shell assembly for a medical device, the medical device comprising a power unit, the shell assembly comprising: a shell main body portion comprising a first half-shell and a second half-shell connected to each other in rotation; a connecting portion, wherein the first half-shell is connected to the second half-shell in rotation through the connecting portion, so that the first half-shell and the second half-shell form a shell cavity for accommodating the power unit when they are docked; the connecting portion comprises a damping portion, the damping portion comprising: a first matching portion provided on the first half-shell and a second matching portion provided on the second half-shell, at least part of the first matching portion and at least part of the second matching portion are concave-convex matched, so as to form a damping force at at least one relative position during the relative rotation of the first half-shell and the second half-shell.

[0030] The present utility model provides a shell assembly for a medical device, the medical device comprising a power unit, the shell assembly comprising: a shell main body portion comprising a first half-shell and a second half-shell connected to each other in rotation; a connecting portion, wherein the first half-shell is connected to the second half-shell in rotation through the connecting portion, so that the first half-shell and the second half-shell form a shell cavity for accommodating the power unit when they are docked; the connecting portion comprises a damping portion, the damping portion comprising: a first matching portion provided on the first half-shell and a second matching portion provided on the second half-shell, at least part of the first matching portion and at least part of the second matching portion are concave-convex matched, so as to form a damping force at at least one relative position during the relative rotation of the first half-shell and the second half-shell.

[0031] At least one embodiment of the present invention further provides a medical device comprising the above-mentioned housing assembly, wherein the medical device further comprises a power unit. For example, the medical device may be an electric stapler.

[0032] The above embodiment of the utility model can achieve that the two half shells remain fixed at any angle within the opening range through the ingenious design of the damping part on the protective shell, which can avoid contaminating the sterile surface and pinching the operator's hands, and can also avoid adverse consequences caused by accidental excessive opening.

[0033] The embodiments of the present invention and examples thereof are described in detail below with reference to the accompanying drawings.

[0034] Figure 1 A schematic top view of a housing assembly for a medical device provided in some embodiments of the present invention. Figure 2 Schematic diagram (with partial cross-section) of a housing assembly for a medical device provided in some embodiments of the present invention. Figure 3 For the utility model Figure 2 A partial cross-sectional enlarged view of Figure 3 yes Figure 2 Corresponding Figure 1 Cross-sectional view at AA.

[0035] For the sake of convenience, in the housing assembly of the embodiment of the present invention, the end away from the operator during operation (that is, the end close to the target tissue (such as the gastrointestinal tract)) is recorded as the distal end or the front end, and the end close to the operator during operation (that is, the end away from the target tissue) is recorded as the proximal end or the rear end. For example, Figure 2 The left end of the housing assembly in the example is used as the distal end or front end, and the right end of the housing assembly is used as the proximal end or rear end. In the embodiments of the present invention, "axial" refers to the direction of the central axis of the device or component. It should be noted that these definitions are only for convenience of expression and cannot be understood as limitations of the present invention. For example, the proximal end and distal end in the embodiments of the present invention are relative positions, such as they can represent the two opposite ends of some components themselves, or they can represent the two opposite ends in a certain direction, which does not affect the orientation in actual application.

[0036] For example, Figure 1-Figure 3 As shown, at least one embodiment of the present invention provides a housing assembly 1000 for a medical device, comprising a housing body 100 and a connecting portion 200. The housing body 100 comprises a first half shell 110 and a second half shell 120 rotatably connected to each other. For example, the first half shell 110 is on the side farther away from the operator during operation, i.e., the first half shell 110 is the front half shell or the distal half shell; the second half shell 120 is on the side closer to the operator than the first half shell 110 during operation, i.e., the first half shell 120 is the rear half shell or the proximal half shell. In another embodiment, as Figure 1 As shown, the split line BB is split into a first half shell and a second half shell, the first half shell is, for example, Figure 2 Front view of the housing assembly half shell (e.g. Figure 2 The first half shell is the one facing the reader); the second half shell is the rear view half shell (e.g. Figure 2 It should be noted that in the embodiments of the present invention, whether it is a "first half shell" or a "second half shell", the description of the "half shell" does not include any restrictions on the proportion of the half shell that should occupy the volume of the entire housing assembly, nor does it include any restrictions on the shape of the half shell. It refers to two shell parts of the housing assembly that are detached and arranged opposite to each other in one direction. In the present invention, as long as the two parts can form a complete housing assembly after being joined, the present invention does not impose any restrictions on their specific shape and volume.

[0037] Figure 4 A schematic diagram of a housing assembly in a middle open position provided in some embodiments of the present invention. Figure 5-Figure 6 Schematic diagram of the housing assembly provided in some embodiments of the present invention in the maximum open position, Figure 6 For the utility model Figure 5 A magnified partial cross-sectional view of .

[0038] For example, Figure 2 and Figure 5 As shown, the first half shell 110 has a Figure 2 The second half shell 120 has a first end 10A and a second end 10B opposite to each other along the handle length direction (as shown in the X direction). Figure 2 For example, in the present invention, the handle length direction of the first half shell 110 and the second half shell 120 refers to the length direction of the handle portion 101 in the corresponding half shell that can be grasped.

[0039] For example, Figures 1-6 As shown, the first end 10A of the first half shell 110 is rotatably connected to the first end 20A of the second half shell 120 through the connecting portion 200, so that the first half shell 110 and the second half shell 120 form a shell cavity for accommodating a power unit (not shown) of the medical device when they are docked. In the present utility model, the shell cavity for accommodating the power unit refers to the cavity formed when the first half shell 110 and the second half shell 120 are docked and closed. The housing assembly 1000 of the embodiment of the present utility model can seal and surround the power unit. In the embodiment of the present utility model, the state when the first half shell 110 and the second half shell 120 are docked refers to the state when the two concave parts of the first half shell 110 and the second half shell 120 are facing each other and joined together to form a whole. It can be seen Figure 2 shown.

[0040] The housing assembly of the embodiment of the present invention serves as a sterile protective housing of the medical device and can be regarded as forming a sterile barrier, which can block the bacteria on the reusable power unit from being transmitted out of the housing assembly.

[0041] In some examples, the housing assembly 1000 can be a disposable component, and thus, the housing assembly 1000 of the present invention can be a disposable protective housing. Of course, this is merely exemplary and does not limit the embodiments of the present invention. For example, the housing assembly can also be made into a reusable housing assembly. The embodiments of the present invention do not limit the number of times it can be used, and this can be determined based on actual circumstances.

[0042] In some examples, the medical device of the present invention also includes a power unit. This power unit, housed within the housing cavity, can be a reusable component. For example, the power unit can include electronic components such as circuit boards and batteries to power and operate the medical device. The power unit cannot be sterilized using methods such as ethylene oxide or high-temperature steam. It should be noted that since the power unit within the housing cavity is not a key feature of the embodiments of the present invention, it will not be described in detail here for the sake of clarity and brevity.

[0043] In an embodiment of the present invention, the first half shell 110 and the second half shell 120 can rotate relative to each other, so that the first half shell 110 and the second half shell 120 can move closer to each other or farther away from each other by rotating, thereby realizing the opening or closing of the housing assembly.

[0044] For example, from Figure 2 In the connected closed state shown in FIG, if the second end 10B of the first half shell 110 is gradually rotated away from the second end 20B of the second half shell 120, the housing assembly 1000 is gradually opened, and the housing assembly 1000 can be opened through Figure 4 until the intermediate open position is reached Figure 5 maximum open position.

[0045] For example, from Figure 5 As shown in the maximum open position, if the second end 10B of the first half shell 110 gradually rotates toward the second end 20B of the second half shell 120, the housing assembly 1000 is gradually closed. Figure 4 until the intermediate open position is reached Figure 2 The phases are shown in the closed state.

[0046] Of course, this is merely exemplary and does not limit the embodiments of the present invention. For example, the second half shell 120 may actively rotate in a direction away from or close to the second end 10B of the first half shell 110 (i.e., the second half shell 120 rotates relative to the first half shell 110). The specific process and state presentation are similar to the above examples and will not be repeated here.

[0047] Figure 7 Schematic diagram of a first half shell provided for some embodiments of the present invention. Figure 8 Schematic diagram of the second half shell provided in some embodiments of the present invention. Figure 9 A partial cross-sectional view of a first half shell provided for some embodiments of the present invention. Figure 10 A partial cross-sectional view of a second half shell provided in some embodiments of the present invention.

[0048] For example, Figures 1-8 As shown, the connecting portion 200 includes a damping portion 210. The damping portion 210 is used to generate a damping force on the first half shell 110 and / or the second half shell 120 when the second end 10B of the first half shell 110 and the second end 20B of the second half shell 120 move away from or approach each other. The damping portion 210 includes a first mating portion 211 disposed on the first half shell 110 and a second mating portion 212 disposed on the second half shell 120. At least a portion of the first mating portion 211 and at least a portion of the second mating portion 212 are mated in a concave-convex manner to generate the damping force at at least one relative position during the relative rotation of the first half shell 110 and the second half shell 120.

[0049] The damping force generated by the damping portion 210 of the present invention is intended to keep the first half shell 110 and / or the second half shell 120 fixed in an open position and prevent them from sliding. Thus, through the ingenious design of the damping portion in the housing assembly, embodiments of the present invention can achieve relative fixation of the first and second half shells at any position within the range of relative rotation. Therefore, when an operator installs and / or removes the power unit from the medical device, the housing assembly is prevented from opening and closing uncontrollably, thereby preventing contamination of sterile surfaces and pinching of the operator's hands. Furthermore, adverse consequences resulting from accidental excessive opening are avoided. For example, the housing assembly can be fixed at any angle during the opening process, preventing the front housing from accidentally sliding during device assembly, thereby contaminating sterile surfaces and / or pinching the operator's hands. Furthermore, the housing assembly can be fixed at any angle that allows for the opening process to be achieved, thereby preventing accidental excessive opening and damage to the housing (e.g., damage to the front housing).

[0050] For example, Figure 5-Figure 8As shown, the first mating portion 211 includes an arcuate concave wall 310, and the second mating portion 212 includes a first column portion 410. The arcuate concave wall 310 and the first column portion 410 match to achieve concave-convex adaptation, and the concave-convex adaptation includes an interference fit at at least one relative position when the second end 10B of the first half shell 110 and the second end 20B of the second half shell 120 are far away from or close to each other, and a clearance fit when the first half shell 110 and the second half shell 120 are docked.

[0051] The embodiment of the utility model designs an arc-shaped concave-convex adapter at the rotation point of the first half shell and the second half shell, which has a simple structure and better damping characteristics. It can achieve that the first half shell and the second half shell remain fixed at any angle within the opening range, and the angle is very adjustable, and the operator feels better when using it.

[0052] For example, Figure 7-Figure 8 As shown, the first matching portion 211 further includes a second column 320. The arc-shaped concave wall 310 of the first matching portion 211 includes a first arc-shaped wall section 311 and a second arc-shaped wall section 312. The second column 320 is located between the first arc-shaped wall section 311 and the second arc-shaped wall section 312 along the central axis of the connecting portion 200. For the sake of clarity and simplicity in this article, the direction of the central axis of the connecting portion 200 in some embodiments of the present invention can be recorded as Figure 7 Y direction.

[0053] For example, Figure 7-Figure 8 As shown, the second matching portion 212 further includes a first gap 420 for the second column 320 to be inserted into, wherein the first gap 420 of the second matching portion 212 and the second column 320 of the first matching portion 211 are adapted in shape, so that the second column 320 can be smoothly inserted into the first gap 420 to achieve the connection between the first matching portion 211 and the second matching portion 212. For example, Figure 7-Figure 8 As shown, the first column portion 410 includes a first column 411 that is concavely matched with the first arcuate wall 311 and a second column 412 that is concavely matched with the second arcuate wall 312. The first gap 420 is located between the first column 411 and the second column 412 along the central axis of the connecting portion 200.

[0054] The embodiment of the utility model realizes the rotation connection by matching and snapping the first half shell and the second half shell, has a simple structure, is easy to assemble and disassemble, and is conducive to the realization of the damping characteristic.

[0055] For example, Figure 7-Figure 8 As shown, the second column portion 320 and the first column portion 410 are coaxially arranged, for example, the second column portion 320 and the first column portion 410 are axially aligned. Figure 8 In this way, the housing assembly of the present invention has better movement stability and reliability, and is also convenient for assembly of the housing assembly.

[0056] In some examples, the first mating portion 211 is fixedly connected to the first end of the first half shell 110. For example, the arcuate concave wall 310 of the first mating portion 211 and the second column 320 of the first mating portion 211 can be independent parts of the first half shell 110 and fixedly connected to the first half shell 100. For another example, the arcuate concave wall 310 of the first mating portion 211 and the second column 320 of the first mating portion 211 can also be integrally formed with the first half shell 110. The embodiments of the present invention are not limited to this.

[0057] In some examples, the second mating portion 212 is fixedly connected to the first end of the second half shell 120. For example, the first column section 411 of the second mating portion 212 and the second column section 412 of the second mating portion 212 can be independent of the second half shell 120 and fixedly connected to the second half shell 120. For another example, the first column section 411 of the second mating portion 212 and the second column section 412 of the second mating portion 212 can also be integrally formed with the second half shell 120. The embodiments of the present invention are not limited to this.

[0058] For example, Figures 1-8 As shown, the connection portion 200 may further include a fixing pin 220, the axial direction of the fixing pin 220 being parallel to or coaxial with the central axis of the connection portion 200. For example, the fixing pin 220 is fixed to one of the first half shell 110 and the second half shell 120.

[0059] For example, Figures 1-8 As shown, the fixing pin 220 connects the first end 10A of the first half shell 110 and the first end 20A of the second half shell 120 so that the first half shell 110 and the second half shell 120 are rotatably connected and the first half shell 110 and the second half shell 120 are rotatable around the fixing pin 220 .

[0060] In the embodiment of the present invention, the connection between the first half shell 110 and the second half shell 120 , two components that rotate with each other, is achieved through a pin, thereby ensuring the stability and reliability of the half shells during rotation.

[0061] In an embodiment of the present invention, the connecting portion 200 can be understood as a top rotating axis structure of a housing assembly. For example, the first half shell 110 and the second half shell 120 in the housing assembly 1000 can rotate around the central axis of the fixing pin 220 through the connecting portion 200 at the first end.

[0062] In some examples, the first column portion 410 and the second column portion 320 are respectively provided with through holes for the fixing pin 220 to pass through, so as to realize the rotation connection between the first end 10A of the first half shell 110 and the first end 20A of the second half shell 120. Figure 7-Figure 8As shown, the fixing pin 220 passes through the rotational assembly hole 201a of the first section column 411 of the first column portion 410 and the second section column 412, and also passes through the rotational assembly hole 202a in the second column portion 320, connecting the first column portion 410 and the second column portion 320, thereby realizing the connection between the first half shell 110 and the second half shell 120.

[0063] It should be noted that the embodiments of the present invention are not limited to the above-mentioned technical solution of setting a fixing pin, and it can also be a case without a fixing pin. For example, the present invention can also be a case where the second column portion 320 has local extension structures on both sides of the axial direction that can be extended into the assembly hole of the first column portion 410. As long as the reliable rotation of the half shell can be guaranteed and the first ends of the front and rear half shells are not separated, it is within the protection scope of the present invention and will not be repeated here.

[0064] In some embodiments of the present invention, the first curved wall section 311 and the second curved wall section 312 may be two discontinuous curved walls on the first half shell 110, such as being interrupted by the second column section 320. In other embodiments, the first curved wall section 311 and the second curved wall section 312 may be portions on either side of a continuous curved wall on the first half shell 110, in which case the second column section 320 is disposed on the portion of the curved wall between the first curved wall section 311 and the second curved wall section 312. These are, of course, merely exemplary and not limiting of the embodiments of the present invention.

[0065] In some examples, the first column section 410 and the second column section 320 are symmetrical structures. In some examples, the second column section 320 is cylindrical. Of course, these are merely exemplary and are not intended to limit the embodiments of the present invention.

[0066] For example, Figure 8 As shown, the first section column 410 and / or the second section column 320 respectively have a column body 501 with a circular cross-section perpendicular to the central axis of the connecting portion 200 and a raised portion 502 that protrudes radially outward relative to the column body 501. For example, the raised portion 502 is located on the end of the first section column 410 and / or the second section column 320 close to the first gap 420 along the central axis of the connecting portion 200. The raised portion 502 matches the arc-shaped concave wall 310 to form an interference fit or a clearance fit, while the entire first section column 410 and / or the second section column 320 does not match the arc-shaped concave wall 310 to form an interference fit, so as to prevent the generation of excessive damping force. For example, the raised portion 502 is located on the end of the first section column 410 and the second section column 320 close to the first gap 420. For example, in Figure 2 In the example, in the closed state, there is a clearance fit between the arc-shaped concave wall 310 of the first matching portion 211 and the raised portion 502 of the second matching portion 212. Figure 4-Figure 6In the example, the arc-shaped concave wall 310 of the first matching part 211 and the raised part 502 of the second matching part 212 are in interference fit during the rotation of the first half shell 110 relative to the second half shell 120 (for example, during the opening or closing of the shell assembly). Thus, when the operator rotates the first half shell 110, a suitable damping feeling is obtained, so that the shell assembly can be fixed at any angle during the opening and closing process.

[0067] In some examples, the profile of the cross section of the raised part 502 of the second matching part 212 perpendicular to the central axis of the connecting part 200 (for the convenience of description, hereinafter referred to as the profile of the cross section of the raised part 502) is a circular arc curve with gradually changing radius, which also means that the radius of each position in the profile of the cross section of the raised part 502 of the second matching part 212 is not completely the same.

[0068] For example, as shown in Figure 3-Figure 6 and Figure 10 , the arc curve of the profile of the cross section of the raised part 502 of the second matching part 212 is a circular arc curve with gradually changing radius. In the example, the radius of the profile of the cross section of the raised part 502 of the second matching part 212 gradually increases from the first end of the curve to the second end of the curve. The first end of the curve refers to the position with the lowest height in the raised part 502 in the abutting closed state, such as the position corresponding to the radius R1 in Figure 10 , which can be seen at the L1 line indicated by the arrow in Figure 10 , and the position corresponding to the radius R1 can also be referred to as the position with a central angle of 0° in the raised part. The second end of the curve refers to the position with the largest angle formed with the first end of the curve in the raised part 502, such as the position corresponding to the radius R9 in Figure 10 , which is the position with the maximum opening angle of the first matching part 211 relative to the second matching part 212, and the position corresponding to the radius R9 can be seen at the L2 line indicated by the arrow in Figure 10 .

[0069] In some examples, the central angle of the cross section of the raised part 502 (which can also be referred to as the central angle of the raised part 502) is the angle formed by each position in the arc curve of the profile of the raised part 502 and the first end of the curve, wherein the maximum central angle of the circular arc curve corresponding to the cross section of the raised part 502 can be greater than 180°, for example Figure 10 , the central angle of the raised part can be 210°, that is, the position corresponding to the radius R9 in Figure 10 . The embodiments of the present application do not limit this angle, which can be adjusted according to the required opening and closing degree of the shell in the actual situation, which will not be enumerated and described here.

[0070] For example, as shown in Figure 9The central angle ß of the curved concave wall 310 of the first half shell 110 is defined as ß, and the central angle ß ranges from 0° to 105°. In the embodiment of the present disclosure, the central angle ß of the curved concave wall 310 refers to the angle ∠POQ formed by the radii at both ends of the arc PQ corresponding to the curved profile of the curved concave wall (i.e., the curved profile of the cross section of the curved concave wall 310 perpendicular to the central axis of the connecting portion 200), within a circle with a center O.

[0071] In some examples of the present invention, the size of the opening angle of the first matching portion 211 relative to the second matching portion 212 can be reflected by the size of the central angle corresponding to the position of the arc-shaped concave wall 310 fitted in the raised portion 502. For example, if the central angle corresponding to the position of the arc-shaped concave wall 310 fitted in the raised portion 502 is larger, it means that the opening degree of the first matching portion 211 relative to the second matching portion 212 is larger. Conversely, if the central angle corresponding to the position of the arc-shaped concave wall 310 fitted in the raised portion 502 is smaller, it means that the opening degree of the first matching portion 211 relative to the second matching portion 212 is smaller. For example, in Figure 10 In the example, with respect to the arc curve of the contour of the raised portion 502 , the central angle of the raised portion 502 gradually increases clockwise in the drawing.

[0072] For example, Figure 10 As shown, according to the clockwise direction in the drawing (within a certain angle range, such as Figure 10 As shown, from the central angle of the raised portion 502 being zero to the central angle of the raised portion 502 being 210°, the radius of the arc curve corresponding to the cross section of the raised portion 502 of the second matching portion 212 gradually increases from small to large, and each arc segment is smoothly transitioned and connected.

[0073] For example, in Figure 10 In this example, the arc curve corresponding to the cross section of the raised portion 502 of the second matching portion 212 is divided into eight arc segments. Figure 10 The arc segments S1, S2, S3, S4, S5, S6, S7, and S8 shown in the figure have an arc radius from small to large, which is S1, S2, S3, S4, S5, S6, S7, and finally S8. Figure 10 As shown, in each of seven of the eight arc segments, the radius of the head and tail positions is different. For example, in S1, R1 is smaller than R2; in S2, R2 is smaller than R3; in S3, R3 is smaller than R4; in S4, R4 is smaller than R5; in S5, R5 is smaller than R6; in S6, R5 is smaller than R6; in S7, R7 is smaller than R8; in addition, in the eighth arc segment S8, R8 can be equal to R9. For example, in Figure 10In the example, R1 is approximately 2.5 mm, R2 is approximately 2.55 mm, R3 is approximately 2.6 mm, R4 is approximately 2.65 mm, R5 is approximately 2.7 mm, R6 is approximately 2.88 mm, R7 is approximately 2.895 mm, R8 is approximately 2.9 mm, and R9 is approximately 2.9 mm. Of course, these are merely exemplary and do not limit the embodiments of the present invention. The embodiments of the present disclosure do not limit the arc segment division, arc segment angle, arc segment radius, etc. As long as the arc concave wall 310 and the raised portion 502 can ultimately meet the clearance fit in the closed state and the interference fit during the opening and closing process, they will not be exhaustively listed or elaborated here.

[0074] In some examples, the aforementioned interference fit formed at at least one relative position when the second end of the first half shell and the second end of the second half shell are away from or close to each other may include: during the relative rotation of the first half shell 110 and the second half shell 120, when the central angle of the raised portion 502 is greater than 105° and less than or equal to 210°, the arcuate concave wall 310 and the first column portion 410 are adapted to form an interference fit. That is, in the present invention, the arcuate concave wall 310 is adapted to the first column portion 410 through Figure 10 When the central angle of the circle is within the range of 105°~210°, the corresponding high-rise position is matched (for example, see Figure 10 The radius R5 to R9 of the raised portion 502 shown in the figure corresponds to the position within this range), forming an interference fit. When the central angle of the raised portion 502 is greater than or equal to 0° and less than or equal to 105° (as can be seen Figure 10 The radius R1 to R5 shown in the figure corresponds to the position of the raised portion 502), and the arc-shaped concave wall 310 is adapted to the first column portion 410 to form a clearance fit.

[0075] Therefore, the embodiments of the present disclosure can not only realize the convenient removal of the power unit in the shell assembly, but also realize appropriate and sufficient damping feeling, which can prevent the half shell from opening too much, and the operation is smooth, and it is well achieved to keep it fixed at any angle during the opening and closing process of the shell assembly.

[0076] The structure of the arc-shaped concave wall 310 in the present invention will be matched accordingly. Figure 2-Figure 3 as well as Figure 9-10 The raised portion 502 shown in the figure achieves clearance fit between the arc-shaped concave wall 310 and the raised portion 502 in the closed state and interference fit during the opening and closing process. Figure 9 As shown, the radius R0 of the arc-shaped concave wall 310 is selected appropriately (such as R2.7 mm in the figure) and the upper end of the arc-shaped concave wall 310 (i.e., the end of the arc-shaped concave wall 310 away from the first end of the curve when the arc-shaped concave wall 310 is in the connected closed state) can be appropriately designed (such as Figure 9As shown, the angle between the tangent line at the end of the upper end of the curved concave wall 310 and the horizontal direction of the drawing is approximately 85°, thereby aligning with the raised portion 502 of the second mating portion 212, thereby achieving the aforementioned clearance fit and interference fit. For example, when the curved concave wall 310 and the raised portion 502 form a clearance fit, the fit range is maximum (e.g., 2.65 mm). As the first half shell 110 rotates relative to the second half shell 120, the radius of the raised portion 502 of the second half shell 120 at the location where it mates with the first half shell 110 gradually increases to 2.7 mm to 2.9 mm, thereby achieving a transition from a clearance fit to an interference fit. In some examples, when the cross-sectional radius R of the raised portion 502 is greater than the radius R0 of the curved concave wall, an interference fit is achieved. When the cross-sectional radius R of the raised portion 502 is equal to or less than the radius R0 of the curved concave wall, a clearance fit is achieved.

[0077] In some examples, the width of the raised portion 502 along the central axis of the connecting portion 200 is 1 mm to 2 mm. Of course, this is merely exemplary and does not limit the embodiments of the present invention. The present invention does not specifically limit the width of the raised portion 502. In some embodiments of the present invention, the width or radial dimension of the raised portion 502 may affect the interference fit effect. For example, increasing the width or radial dimension of the raised portion 502 may increase the interference fit, thereby increasing the force required to rotate the first half shell (i.e., increasing the damping force). Conversely, decreasing the width or radial dimension of the raised portion 502 may reduce the interference fit, thereby reducing the force required to rotate the first half shell.

[0078] In some examples, the embodiments of the present invention may further increase the width of the raised portion 502 and correspondingly reduce the radius of the raised portion 502 , thereby enabling the present invention to achieve a suitable interference fit effect.

[0079] In this way, the present invention can achieve a better interference fit effect by adjusting the width of the raised portion and / or the radial size of the raised portion, which is beneficial to the fixed retention effect of the shell component at any angle during the opening and closing process.

[0080] In some examples, the surface of the raised portion 502 has a rough texture. In other examples, the surface of the curved concave wall has a rough texture. This can increase the friction between the first mating portion 211 and the second mating portion 212, facilitating the securing of the housing assembly at any angle during the opening and closing process.

[0081] In an embodiment of the present invention, the raised portion 502 can be formed by increasing the radius of the original column body 501 within a certain width in the axial direction of the column body 501. Of course, this is merely exemplary and does not limit the embodiments of the present invention. For example, the raised portion 502 can also be formed by adding an additional convex curved structure to the column body 501. The embodiments of the present invention do not limit the specific form of the raised portion 502. In some examples, the arcuate concave wall matches the curvature of the first column portion to form the interference fit or clearance fit described above.

[0082] At least one embodiment of the present invention further provides a medical device, comprising a housing assembly 1000 as described in any of the above examples, and further comprising a power unit (not shown). For example, the medical device may be a stapler, including an electric stapler, such as a laparoscopic stapler. In other embodiments, the medical devices that can be protected by the housing assembly 1000 are not limited thereto; the housing assembly of the present invention may also be used with other suitable medical devices, and the embodiments of the present invention do not specifically limit the type of medical device.

[0083] It should be noted that the specific implementation and technical effects of the medical device of the embodiment of the present invention can be referred to the description of the housing assembly above, and for the sake of clarity and conciseness of this article, they will not be repeated here.

[0084] There are a few points to note:

[0085] (1) The drawings of the embodiments of the present invention only relate to the structures of the embodiments of the present invention. Other structures may refer to conventional designs.

[0086] (2) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0087] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A housing assembly for a medical device, the medical device comprising a power unit, characterized in that: The housing assembly comprises: The shell body comprises a first half shell and a second half shell rotatably connected to each other; a connecting portion, wherein the first half shell is rotatably connected to the second half shell through the connecting portion, so that the first half shell and the second half shell form a housing cavity for accommodating the power unit when docked; The connecting portion includes a damping portion, which includes: a first matching portion arranged on the first half shell and a second matching portion arranged on the second half shell, at least a portion of the first matching portion is concave-convexly adapted to at least a portion of the second matching portion to form a damping force at at least one relative position during the relative rotation of the first half shell and the second half shell.

2. The housing assembly according to claim 1, wherein The first half shell has a first end and a second end opposite to each other along the length of the handle, the second half shell has a first end and a second end opposite to each other along the length of the handle, the first matching portion is arranged on the first end of the first half shell, and the second matching portion is arranged on the first end of the second half shell.

3. The housing assembly according to claim 2, wherein: The first mating portion includes an arcuate concave wall, and the second mating portion includes a first column portion, and the arcuate concave wall and the first column portion match to achieve the concave-convex adaptation, wherein the concave-convex adaptation of the arcuate concave wall and the first column portion includes: an interference fit at the at least one relative position when the second end of the first half shell and the second end of the second half shell are far away from or close to each other, and a clearance fit when the first half shell and the second half shell are docked.

4. The housing assembly according to claim 3, wherein: The first matching portion further includes a second column portion, the arc-shaped concave wall includes a first arc-shaped wall section and a second arc-shaped wall section, and the second column portion is located between the first arc-shaped wall section and the second arc-shaped wall section along the central axis of the connecting portion; The second mating portion further includes a first gap for the second column portion to be inserted into, the first column portion including: a first column portion that is adapted to the first arcuate wall concavo-convex portion and a second column portion that is adapted to the second arcuate wall concavo-convex portion, and the first gap is located between the first column portion and the second column portion along the central axis of the connecting portion; The second column portion is coaxially arranged with the first column portion.

5. The housing assembly according to claim 4, wherein: The connecting portion further comprises a fixing pin, wherein the axial direction of the fixing pin is parallel to or coaxial with the central axis of the connecting portion; The fixing pin connects the first end of the first half shell and the first end of the second half shell, and the first half shell and the second half shell are rotatable around the fixing pin; The first column portion and the second column portion are respectively provided with through holes for the fixing pin to pass through, so as to realize the rotational connection between the first end of the first half shell and the first end of the second half shell.

6. The housing assembly according to claim 4, wherein: The first section of the column and / or the second section of the column respectively have a column body with a circular cross-section perpendicular to the central axis of the connecting portion and a raised portion that protrudes radially outward relative to the column body, wherein the raised portion matches the arc-shaped concave wall to form the interference fit or the clearance fit.

7. The housing assembly according to claim 6, wherein: The surface of the raised portion has uneven texture, and / or the surface of the arc-shaped concave wall has uneven texture.

8. The housing assembly according to claim 6, wherein: The profile of the cross section of the raised portion perpendicular to the central axis of the connecting portion is an arc-shaped curve with a gradually changing radius, so as to form the interference fit or the clearance fit.

9. The housing assembly according to claim 6 or 8, wherein: The raised portion is located on one end of the first section of the column and / or the second section of the column close to the first gap along the central axis of the connecting portion; When the radius of the cross section of the raised portion is greater than the radius of the arc-shaped concave wall, the interference fit is formed, and when the radius of the cross section of the raised portion is equal to or smaller than the radius of the arc-shaped concave wall, the clearance fit is formed.

10. The housing assembly according to claim 9, wherein: The central angle of the arc-shaped concave wall is less than 105°, and during the relative rotation of the first half shell and the second half shell, When the central angle of the raised portion is greater than or equal to 0° and less than or equal to 105°, the arcuate concave wall is adapted to the first column portion to form the clearance fit; when the central angle of the raised portion is greater than 105° and less than or equal to 210°, the arcuate concave wall is adapted to the first column portion to form the interference fit.

11. The housing assembly according to claim 1, wherein: The medical device is an electric stapler.

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