CN115444517A - Device is transplanted to particle skin - Google Patents
Device is transplanted to particle skin Download PDFInfo
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- CN115444517A CN115444517A CN202211183694.8A CN202211183694A CN115444517A CN 115444517 A CN115444517 A CN 115444517A CN 202211183694 A CN202211183694 A CN 202211183694A CN 115444517 A CN115444517 A CN 115444517A
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- 239000002245 particle Substances 0.000 title claims abstract description 28
- 238000002054 transplantation Methods 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 claims description 26
- 230000003228 microsomal effect Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 5
- 230000002500 effect on skin Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000001589 microsome Anatomy 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/322—Skin grafting apparatus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/322—Skin grafting apparatus
- A61B2017/3225—Skin grafting apparatus with processing of harvested tissue
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a microskin transplanting device which comprises two transplanting arms arranged in a V shape, wherein the far ends of the transplanting arms are formed with bevel opening sections for puncturing tissues, and the bevel opening sections of the two transplanting arms are oppositely arranged and are both inwards concave to form a half cavity for containing microskin. The application of the particle skin transplanting device has the functions of skin making and planting, and the instrument does not need to be replaced in the particle skin transplanting process, so that the operation difficulty is reduced, the operation efficiency is improved, the structure is simple, negative pressure equipment does not need to be adopted, and the manufacturing and using cost is greatly reduced. Because the tissue is directly cut by the two transplanting arms to form the particle skin, the particle skin with basically consistent size can be obtained only by controlling the depth of the transplanting arms inserted into the tissue under the condition that the sizes of the transplanting arms and the half cavities are not changed, thereby avoiding the occurrence of uneven skin particle size and improving the skin grafting effect.
Description
Technical Field
The invention mainly relates to the technical field of medical instruments, in particular to a particle skin transplanting device.
Background
The particle skin transplantation comprises two steps of skin preparation and planting, wherein the skin preparation refers to preparing the autologous skin into particles with the size of not more than 2 cubic millimeters by using a skin preparation instrument, and the planting refers to planting the prepared particles into the autologous body. Microskin transplantation can achieve the permanent sealing effect of the wound surface by virtue of microskin amplification, and is one of the main wound surface repair technologies due to large expansion ratio (the maximum expansion ratio can be increased by 20 times), high skin grafting efficiency and high survival rate.
In the prior art, due to the lack of a special microskin transplanting instrument, doctors are required to manually make microskins by using tissue scissors and then the prepared microskins are transplanted into the bodies by using tweezers. The operation mode has low speed and low efficiency, increases the workload of doctors, improves the operation risk and forms double tests on doctors and patients. Moreover, the skin grains produced by this method have uneven sizes, which will affect the skin grafting effect. Therefore, a special microskin transplantation device with simple structure, high efficiency, easy operation and uniform skin grain size is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a microsomal skin transplantation device.
In order to solve the technical problem, the invention adopts the following technical scheme:
a microsomal skin transplantation device comprises two transplantation arms which are arranged in a V shape, wherein the far ends of the transplantation arms are formed with bevel opening sections for puncturing tissues, and the bevel opening sections of the two transplantation arms are oppositely arranged and are both inwards concave to form a half cavity for containing microsomal skins.
As a further improvement of the above technical solution:
the near ends of the two transplanting arms are respectively fixed with the far end of a grab handle, the middle parts of the grab handles are hinged in a crossed mode, and the two transplanting arms can be driven to turn around a hinged point by changing the distance between the far ends of the grab handles.
The microskin transplantation device comprises a shell, wherein the shell is provided with V-shaped arranged channels, two transplantation arms are movably arranged in the channels in a piston mode, and a movable gap is formed between the channels and the transplantation arms; the far end of the transplanting arm protrudes from the shell, the near end of the transplanting arm is connected with the driving mechanism, and the driving mechanism can be moved to drive the two transplanting arms to move linearly along the channel.
The driving mechanism comprises a pair of handles with the middle parts hinged in a crossed mode, the far ends of the handles are hinged with the near ends of the transplanting arms, and the two transplanting arms can be driven to move linearly along the channel by changing the distance between the near ends of the handles.
The shell is provided with a guide groove in a near-side extending and forming mode, hinge shafts of the two handles are connected with the guide groove in a sliding mode, and the two transplanting arms move in a mirror image mode when the hinge shafts move along the guide groove.
The driving mechanism comprises an inverted T-shaped sliding block which is installed in a sliding mode along the length direction of the shell, a waist hole is formed in a cantilever at the far end of the sliding block, and the near end of the transplanting arm is hinged with the waist hole; the driving mechanism further comprises a driving rod penetrating through the shell, the driving rod is matched with the transplanting arms or the sliding blocks through a gear mechanism, and the driving rod can drive the two transplanting arms to linearly move along the channel by pushing and pulling.
The gear mechanism comprises a first straight rack formed on the driving rod, a second straight rack formed on the transplanting arm and a gear hinged with the shell; the gear is simultaneously meshed with the first straight rack and the second straight rack.
The microskin transplantation device also comprises an elastic piece for resetting the driving rod; the elastic piece is sleeved on the driving rod, one end of the elastic piece is connected with the shell, and the other end of the elastic piece is connected with the sliding block; or one end of the elastic piece is connected with the shell, and the other end of the elastic piece is connected with the driving rod.
The gear mechanism comprises a first straight rack formed on the driving rod, a third straight rack formed on the sliding block and a gear hinged with the shell; the gear is simultaneously meshed with the first straight rack and the third straight rack.
The far end of the driving rod is formed with a thimble which is aligned with the seam of the two bevel opening sections and is used for discharging the particle skin from the half cavity.
The edge of the cross section of the bevel opening is sharp.
The semi-cavity is formed with an air hole communicated with the outside, or the edge of the semi-cavity is formed with a gap for air circulation.
The transplanting arm is set to be a tubular structure, and the inner diameter R is 1-3mm.
The included angle theta of the two transplanting arms is 30-150 degrees.
The far end of the shell is formed with a limiting surface used for abutting against tissues, and the maximum height H of the transplanting arm capable of protruding out of the limiting surface is 1-2mm.
Compared with the prior art, the invention has the advantages that:
the application of the particle skin transplanting device has the functions of skin making and planting, and the instrument does not need to be replaced in the particle skin transplanting process, so that the operation difficulty is reduced, the operation efficiency is improved, the structure is simple, negative pressure equipment does not need to be adopted, and the manufacturing and using cost is greatly reduced. Because the tissue is directly cut by the two transplanting arms to form the particle skin, the particle skin with basically consistent size can be obtained only by controlling the depth of the transplanting arms inserted into the tissue under the condition that the sizes of the transplanting arms and the half cavities are not changed, so that the phenomenon of uneven skin particle size can be avoided, and the skin grafting effect is improved.
Drawings
FIG. 1 is a schematic view showing the structure of a microskin graft device according to example 1;
FIG. 2 is a schematic view showing a process for producing a skin using the microsomal skin graft device according to example 1;
FIG. 3 is a schematic view showing a procedure for planting using the microsomal peel graft device according to example 1;
FIG. 4 is a schematic view showing the structure of a microsomal dermal graft device according to embodiment 2;
FIG. 5 is a schematic view showing the structure of a microskin graft device according to example 3;
figure 6 is a schematic diagram of the construction of the microsomal dermal graft device according to example 4 (half shell not shown);
figure 7 is a schematic front view of the microskin graft device of example 4 (half shell not shown);
fig. 8 is a schematic view showing the structure of a microskin graft device according to example 5 (half of the housing is not shown).
The reference numerals in the figures denote: 1. transplanting an arm; 11. a bevel section; 12. a half cavity; 121. air holes; 122. opening; 2. microskin; 3. a grab handle; 31. a return spring; 4. a housing; 41. a channel; 42. a guide groove; 43. a limiting surface; 5. a drive mechanism; 51. a grip; 511. hinging a shaft; 52. a slider; 521. a cantilever; 522. a waist hole; 53. a drive rod; 531. a thimble; 54. a gear mechanism; 541. a first straight rack; 542. a second straight rack; 543. a gear; 544. a third straight rack; 55. an elastic member.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Example 1
As shown in fig. 1 to 3, the microskin transplantation device of the present embodiment comprises two transplantation arms 1 arranged in a V-shape, wherein the distal end of the transplantation arm 1 is formed with a bevel section 11 for penetrating tissue, and the bevel sections 11 of the two transplantation arms 1 are oppositely arranged and both are recessed to form a half cavity 12 for accommodating the microskin 2. By arranging two transplanting arms 1 with bevel fracture surfaces 11, wherein the bevel fracture surfaces 11 are inwards sunken to form semi-cavities 12, when the two transplanting arms 1 penetrate into tissues in a posture that the bevel fracture surfaces 11 are opposite, the bevel fracture surfaces 11 can cut the tissues, and tissue particles (namely particle skins 2) formed by cutting gradually enter the semi-cavities 12 under the pushing action; when the two graft arms 1 are moved towards each other and in the joined state, the microskin 2 is cut by the bevel 11 and completely enters the chamber enclosed by the two half-cavities 12, and the skin preparation is completed (process shown in figure 2). Next, moving the transplanting device carrying the microsomes 2 to a region to be transplanted, extruding the transplanting device towards tissues, reversely moving the two transplanting arms 1 when the depth of the wound meets the transplanting requirement, wherein the tissues are extruded outwards by the two transplanting arms 1 and form the wound, and the transplanting arms 1 respectively extrude the tissues outwards to open the wound, and at the moment, the microsomes 2 fall into the wound and are attached to the tissues at the wound under the action of gravity; the two transplantation arms 1 are continuously moved reversely until the transplantation arms are separated from the tissues, at the moment, the tissues at the two sides of the wound move to the wound again due to the lack of pushing of the transplantation arms 1, and the microskin 2 is wrapped, and the planting is completed (the process is shown in figure 3). The particle skin transplanting device has the functions of skin making and planting, and does not need to replace instruments in the particle skin transplanting process, so that the operation difficulty is reduced, the operation efficiency is improved, the structure is simple, negative pressure equipment is not needed, and the manufacturing and using cost is greatly reduced. Because the tissue is directly cut by the two transplanting arms 1 to form the particle skin, under the condition that the sizes of the transplanting arms 1 and the half cavities 12 are not changed, the particle skin with basically consistent size can be obtained only by controlling the inserting depth of the transplanting arms 1 into the tissue, thereby avoiding the phenomenon of uneven skin particle size and improving the skin grafting effect.
In this embodiment, the bevel profile 11 has sharp edges. By setting the edge of the bevel profile 11 to be sharp, the graft arm 1 can more easily penetrate tissue, improve the efficiency of the surgery, and reduce blunt trauma to the patient.
In this embodiment, the graft arms 1 are provided in a tubular configuration with an inner diameter R of 1-3mm. It is easier to manufacture (cf. Prior art injection needle tubes) by providing the graft arm 1 in a tubular configuration in which the tubular lumen is the half-cavity 12. Also, since the microskin 2 is required to have a size of not more than 2 cubic millimeters, the inner diameter R of the graft arm 1 is set to 1mm to 3mm for easier preparation of the skin.
In this embodiment, the cavity half 12 is formed with an air hole 121 communicating with the outside, or the edge of the cavity half 12 is formed with a notch 122 for air circulation. The particle skin 2 is fragile relatively, in order to avoid two half chambeies 12 totally enclosed to cause intracavity atmospheric pressure to rise and cause the damage to particle skin 2, have the gas pocket 121 with outside intercommunication at half chamber 12 shaping, or set up the opening 122 that is used for the gas circulation at half chamber 12 edge, when two half chambeies 12 joint, the intracavity is linked together through gas pocket 121 or opening 122 with the outer atmosphere in chamber to can realize atmospheric pressure's balance, avoid damaging particle skin 2.
Example 2
As shown in fig. 4, a second embodiment of a microsomal dermal graft device according to the present invention is substantially the same as in embodiment 1, except that: in this embodiment, the proximal ends of the two transplantation arms 1 are respectively fixed with the distal end of one handle 3, the middle parts of the two handles 3 are hinged in a crossing manner, and the two transplantation arms 1 can be driven to overturn around the hinged point by changing the distance between the distal ends of the handles 3. By arranging the grab handle 3 connected with the near end of the transplanting arm 1, an operator can obtain a better acting point, thereby facilitating the one-handed operation. The middle part of the grab handle 3 is relatively poorly hinged to form a structure similar to scissors or pliers, and the two transplanting arms 1 can be driven to turn over around a hinged point by holding the grab handle 3 and changing the distance between the far ends of the grab handle 3, so that the distance between the bevel opening sections 11 of the two transplanting arms 1 is changed.
Preferably, a return spring 31 is connected between the two transplantation arms 1. When the return spring 31 is in a relaxed state, the two bevel profiles 11 are separated.
Example 3
As shown in fig. 5, a third embodiment of a microskin graft device of the invention, which is substantially the same as embodiment 1 except that: in the embodiment, the microskin transplantation device comprises a shell 4, wherein a V-shaped channel 41 is formed in the shell 4, two transplantation arms 1 are movably arranged in the channel 41 in a piston mode, and a movable gap is formed between the channel 41 and the transplantation arms 1; the distal ends of the arms 1 project from the housing 4 and the proximal ends are connected to a drive mechanism 5, which is adapted to move the drive mechanism 5 to move the arms 1 linearly along the channel 41. The driving mechanism 5 comprises a pair of middle cross hinged grips 51, the distal ends of the grips 51 are hinged with the proximal ends of the transplantation arms 1, and the two transplantation arms 1 can be driven to move linearly along the channel 41 by changing the distance between the proximal ends of the grips 51. A guide groove 42 is formed extending on the proximal side of the housing 4, and the hinge axis 511 of the two grips 51 is slidably connected with the guide groove 42, and the two transplantation arms 1 move in a mirror image manner when the hinge axis 511 moves along the guide groove 42. The included angle theta of the two transplanting arms 1 is 30-150 degrees. When the transplanting arm 1 punctures the tissue in a turnover mode, the area covered by the far end of the transplanting arm 1 is larger than the area covered by the reciprocating motion along the length direction of the transplanting arm, so that larger area of damage is caused to the tissue. By providing the channel 41 having a V-shaped diameter corresponding to the outer diameter of the graft arm 1 in the housing 4, the graft arm 1 can be restricted from moving only in the longitudinal direction of the channel 41 (i.e., the longitudinal direction of the graft arm 1), and the occurrence of a turn-over can be avoided, the size of the wound can be reduced, and the pain of the patient can be alleviated. Meanwhile, through the arrangement of the grip 51 with the far end hinged with the transplanting arm 1 and the middle part hinged in a mutually crossed way, a force application point is provided for an operator, and the single-hand operation is more convenient. Furthermore, in order to advance and retreat both transplantation arms 1 synchronously, a guide groove 42 is formed extending in the near side of the housing 4, the hinge shafts 511 of the grips 51 are slidably connected to the guide groove 42, the longitudinal direction of the guide groove 42 is along the symmetrical center of both transplantation arms 1, and when the hinge shafts 511 slide along the guide groove 42, both transplantation arms 1 move in mirror image, thereby ensuring the synchronous advance and retreat of both transplantation arms 1.
In this embodiment, the distal end of the housing 4 is formed with a stop surface 43 for abutting tissue, and the maximum height H of the graft arm 1 that can protrude beyond the stop surface 43 is 1-2mm. The far end of the transplanting arm 1 protrudes from the far end of the shell 4, and the protruding height of the transplanting arm 1 can be accurately controlled by arranging the limiting surface 43 at the far end of the shell 4. In the transplantation process, the limiting surface 43 is firstly attached to the tissue, when the transplantation arm 1 protrudes out of the limiting surface 43, the tissue can be penetrated, and the penetration depth of the tissue is the maximum height H of the transplantation arm 1 which can protrude out of the limiting surface 43.
Example 4
As shown in fig. 6 and 7, a fourth embodiment of a microskin graft device of the invention, which is substantially the same as embodiment 3 except that: in this embodiment, the driving mechanism 5 comprises an inverted T-shaped slider 52 slidably mounted along the length direction of the housing 4, a waist hole 522 is formed on a suspension arm 521 at the distal end of the slider 52, and the proximal end of the transplantation arm 1 is hinged with the waist hole 522; the driving mechanism 5 further comprises a driving rod 53 penetrating the housing 4, the driving rod 53 is matched with the transplanting arms 1 or the sliding block 52 through a gear mechanism 54, and the two transplanting arms 1 can be driven to linearly move along the channel 41 by pushing and pulling the driving rod 53. The gear mechanism 54 comprises a first spur rack 541 formed on the driving rod 53, a second spur rack 542 formed on the transplanting arm 1 and a gear 543 hinged with the shell 4; the gear 543 is simultaneously engaged with the first spur rack 541 and the second spur rack 542. The microskin graft device further includes an elastic member 55 for resetting the driving rod 53; the elastic element 55 is sleeved on the driving rod 53, one end of the elastic element is connected with the shell 4, and the other end of the elastic element is connected with the sliding block 52; or the elastic member 55 has one end connected to the housing 4 and the other end connected to the driving rod 53. When the driving rod 53 moves upwards, the first spur rack 541 drives the second spur rack 542 to move along the far end of the transplanting arm 1 in the length direction through the gear 543, the bevel opening sections 11 of the two transplanting arms 1 are close to each other, meanwhile, the near end of the transplanting arm 1 pulls the T-shaped slide block 52 to move downwards, and in the process, the near end of the transplanting arm 1 slides towards the inner side of the waist hole 522; when the driving rod 53 moves downwards, the first spur rack 541 drives the second spur rack 542 to move along the proximal end of the transplanting arm 1 in the length direction through the gear 543, the oblique mouth sections 11 of the two transplanting arms 1 are far away from each other, meanwhile, the proximal end of the transplanting arm 1 pushes the T-shaped slide block 52 to move upwards, and in the process, the proximal end of the transplanting arm 1 slides towards the outer side of the waist hole 522.
In this embodiment, the distal end of the drive rod 53 is formed with a spike 531 aligned with the seam of the two bevelled sections 11 for ejecting the microskins 2 from the half-cavity 12. Through the arrangement of the ejector pin 531, when the microskin 2 is clamped in the half cavity 12 and cannot be planted into tissues in the planting process, the ejector pin 531 can push the microskin 2 towards the tissues so that the microskin 2 can be separated from the half cavity 12 and enter a wound of the tissues of a region to be transplanted.
Example 5
As shown in fig. 8, a fifth embodiment of a microskin graft device of the invention, which is substantially the same as embodiment 4 except that: in this embodiment, the gear mechanism 54 includes a first spur rack 541 formed on the driving rod 53, a third spur rack 544 formed on the slider 52, and a gear 543 hinged with the housing 4; the gear 543 meshes with spur rack one 541 and spur rack three 544 simultaneously. When the driving rod 53 moves upwards, the first spur rack 541 drives the third spur rack 544 to move downwards through the gear 543 (or when the slide block 52 moves downwards, the third spur rack 544 drives the first spur rack 541 to move upwards through the gear 543), because the third spur rack 544 is formed on the slide block 52 and the cantilever 521 at the distal end of the slide block 52 is hinged with the transplanting arm 1, the transplanting arm 1 is driven to move distally along the length direction of the transplanting arm 1, the bevel opening sections 11 of the two transplanting arms 1 are close to each other, and the proximal end of the transplanting arm 1 slides towards the inner side of the waist hole 522 in the process; when the driving rod 53 moves downwards, the first spur rack 541 drives the third spur rack 544 to move upwards through the gear 543 (or when the slide block 52 moves upwards, the third spur rack 544 drives the first spur rack 541 to move downwards through the gear 543), and since the third spur rack 544 is formed on the slide block 52 and the cantilever 521 at the far end of the slide block 52 is hinged with the transplanting arm 1, the transplanting arm 1 is driven to move along the near end of the length direction thereof, the oblique mouth sections 11 of the two transplanting arms 1 are far away from each other, and in the process, the near end of the transplanting arm 1 slides towards the outer side of the waist hole 522.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (15)
1. A microskin grafting device, characterized by: the tissue grafting device comprises two grafting arms (1) which are arranged in a V shape, wherein the far ends of the grafting arms (1) are formed with bevel opening sections (11) used for puncturing tissues, and the bevel opening sections (11) of the two grafting arms (1) are oppositely arranged and are both inwards concave to form a half cavity (12) used for containing microskin (2).
2. The microskin graft device of claim 1, wherein: the near ends of the two transplanting arms (1) are respectively fixed with the far end of a grab handle (3), the middle parts of the two grab handles (3) are hinged in a crossed manner, and the two transplanting arms (1) can be driven to turn around a hinged point by changing the distance between the far ends of the grab handles (3).
3. The microskin graft device of claim 1, wherein: the microskin transplantation device comprises a shell (4), wherein a V-shaped distributed channel (41) is formed in the shell (4), two transplantation arms (1) are movably arranged in the channel (41) in a piston mode, and a movable gap is formed between the channel (41) and the transplantation arms (1); the far ends of the transplanting arms (1) protrude out of the shell (4), the near ends of the transplanting arms are connected with a driving mechanism (5), and the two transplanting arms (1) can be driven to move linearly along a channel (41) by moving the driving mechanism (5).
4. The microskin graft device according to claim 3, wherein: the driving mechanism (5) comprises a pair of handles (51) with middle parts hinged in a crossed mode, the far ends of the handles (51) are hinged with the near ends of the transplanting arms (1), and the two transplanting arms (1) can be driven to move linearly along the channel (41) by changing the distance between the near ends of the handles (51).
5. The microskin graft device according to claim 4, wherein: a guide groove (42) is formed by extending the near side of the shell (4), the articulated shafts (511) of the two handles (51) are connected with the guide groove (42) in a sliding way, and the two transplanting arms (1) move in a mirror image mode when the articulated shafts (511) move along the guide groove (42).
6. The microskin graft device according to claim 3, wherein: the driving mechanism (5) comprises an inverted T-shaped sliding block (52) which is installed in a sliding mode along the length direction of the shell (4), a waist hole (522) is formed in a cantilever (521) at the far end of the sliding block (52), and the near end of the transplanting arm (1) is hinged to the waist hole (522); the driving mechanism (5) further comprises a driving rod (53) penetrating through the shell (4), the driving rod (53) is matched with the transplanting arms (1) or the sliding block (52) through a gear mechanism (54), and the two transplanting arms (1) can be driven to linearly move along the channel (41) by pushing and pulling the driving rod (53).
7. The microskin graft device according to claim 6, wherein: the gear mechanism (54) comprises a first straight rack (541) formed on the driving rod (53), a second straight rack (542) formed on the transplanting arm (1) and a gear (543) hinged with the shell (4); the gear (543) is meshed with the first straight rack (541) and the second straight rack (542) simultaneously.
8. The microskin graft device according to claim 6, wherein: the microskin graft device further comprises an elastic member (55) for resetting the drive rod (53); the elastic piece (55) is sleeved on the driving rod (53), one end of the elastic piece is connected with the shell (4), and the other end of the elastic piece is connected with the sliding block (52); or one end of the elastic piece (55) is connected with the shell (4), and the other end is connected with the driving rod (53).
9. The microskin graft device according to claim 6, wherein: the gear mechanism (54) comprises a first straight rack (541) formed on the driving rod (53), a third straight rack (544) formed on the sliding block (52) and a gear (543) hinged with the shell (4); the gear (543) is meshed with the first straight rack (541) and the third straight rack (544) simultaneously.
10. The microsomal skin graft device according to any one of claims 6-9, wherein: the far end of the driving rod (53) is formed with a thimble (531) which is aligned with the joint of the two bevel sections (11) and is used for discharging the particle skin (2) from the half cavity (12).
11. The microsomal skin graft device according to any one of claims 1-9, wherein: the edge of the bevel section (11) is sharp.
12. The microsomal skin graft device according to any one of claims 1-9, wherein: the semi-cavity (12) is formed with an air hole (121) communicated with the outside, or the edge of the semi-cavity (12) is formed with a gap (122) for air circulation.
13. The microsomal skin graft device according to any one of claims 1-9, wherein: the transplanting arm (1) is set to be a tubular structure, and the inner diameter R is 1-3mm.
14. The microsomal skin graft device according to any one of claims 1-9, wherein: the included angle theta of the two transplanting arms (1) is 30-150 degrees.
15. The microsomal skin graft device according to any one of claims 3-9, wherein: the far end of the shell (4) is formed with a limiting surface (43) used for abutting against tissues, and the maximum height H of the transplanting arm (1) capable of protruding out of the limiting surface (43) is 1-2mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211183694.8A CN115444517B (en) | 2022-09-27 | 2022-09-27 | Microparticle skin transplanting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211183694.8A CN115444517B (en) | 2022-09-27 | 2022-09-27 | Microparticle skin transplanting device |
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| CN115444517A true CN115444517A (en) | 2022-12-09 |
| CN115444517B CN115444517B (en) | 2024-07-05 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US4491134A (en) * | 1978-08-10 | 1985-01-01 | Oscar Malmin | Hair replacement apparatus |
| US20090005765A1 (en) * | 2007-06-26 | 2009-01-01 | Restoration Robotics, Inc. | Follicular unit harvesting tools including devices and their use for severing connective tissue |
| US20180325543A1 (en) * | 2016-01-22 | 2018-11-15 | Mårten Skog | Minimally invasive tissue harvesting device |
| CN105615950A (en) * | 2016-02-23 | 2016-06-01 | 汕头大学医学院 | Full-function ring-cutting electric hair follicle transplanting pen |
| US20190282357A1 (en) * | 2016-11-05 | 2019-09-19 | Asmed Ozel Sac Ekimi Saglik Hizmetleri Ticaret A.S | Hair graft placement apparatus used for hair transplantations |
| CN109091205A (en) * | 2018-07-31 | 2018-12-28 | 中国人民解放军陆军军医大学第二附属医院 | A kind of hair transplantation pen |
| CN209421999U (en) * | 2018-12-21 | 2019-09-24 | 成都丝缘医院管理有限公司 | A kind of hair transplantation tweezers |
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| CN115444517B (en) | 2024-07-05 |
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