CN210843336U - Transverse carpal ligament incision knife is exclusively used in - Google Patents
Transverse carpal ligament incision knife is exclusively used in Download PDFInfo
- Publication number
- CN210843336U CN210843336U CN201921417357.4U CN201921417357U CN210843336U CN 210843336 U CN210843336 U CN 210843336U CN 201921417357 U CN201921417357 U CN 201921417357U CN 210843336 U CN210843336 U CN 210843336U
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- China
- Prior art keywords
- blade
- cutting edge
- transverse carpal
- carpal ligament
- knife
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- 210000005117 flexor retinaculum Anatomy 0.000 title claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 208000004550 Postoperative Pain Diseases 0.000 abstract 1
- 210000003041 ligament Anatomy 0.000 description 10
- 210000005036 nerve Anatomy 0.000 description 5
- 231100000241 scar Toxicity 0.000 description 5
- 206010052428 Wound Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000002435 tendon Anatomy 0.000 description 4
- 206010033675 panniculitis Diseases 0.000 description 3
- 210000004304 subcutaneous tissue Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000002792 vascular Effects 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 206010053692 Wound complication Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010020718 hyperplasia Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001617 median nerve Anatomy 0.000 description 2
- 230000036407 pain Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000011888 autopsy Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 238000002683 hand surgery Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a transverse carpal ligament incision knife, which relates to the technical field of medical instruments and comprises a blade, a cutting edge and a knife handle, wherein the cutting edge is connected to the upper part of the blade; the utility model discloses simple structure, convenient to use adopts the utility model discloses a scalpel can reduce the incision of operation, shortens patient later stage rehabilitation's time, alleviates the postoperative pain, is convenient for wrap up and later stage dressing change, and the incision matches with the line on the palm as far as possible, more pleasing to the eye.
Description
Technical Field
The utility model relates to a scalpel technical field for hand surgery, in particular to transverse carpal ligament incision sword.
Background
When the transverse carpal ligament is cut in the prior art, the transverse carpal ligament needs to be cut far away by a scalpel, the skin arc of about 5cm along the thenar striation is completely cut, the transverse carpal ligament is exposed, the ligament is cut again, and the compression of the ligament on the deep median nerve is relieved, but the cut is long, the wound is large, the wound pain bleeding is not beneficial to early rehabilitation, an obvious scar is left even if the wound is healed, the appearance is influenced, the skin nerve is easily damaged, the scar hyperplasia of the skin causes long-term pain, and the probability of tendon nerve adhesion after the subcutaneous tissue oozing multiple surgery is high.
Disclosure of Invention
The utility model aims at solving and need use the scalpel with the wrist striae far away when cutting the transverse carpal ligament among the prior art, the skin arc who follows the interstellar striation about 5cm cuts entirely, reveal the transverse carpal ligament, cut the ligament again, relieve it and oppress deep median nerve, nevertheless the incision is longer, the wound is big, wound pain is bled and is unfavorable for early rehabilitation, even the wound healing also can leave over obvious scar, influence the outward appearance, and easily damage the cutaneous nerve, skin scar hyperplasia leads to permanent pain, the many postoperative technical problem that tendon nerve adhesion probability is high again of subcutaneous tissue oozing blood, and provide a transverse carpal ligament cut sword is exclusively used in.
A transverse carpal ligament incision knife comprises a blade, a cutting edge and a knife handle, wherein the cutting edge is connected to the upper part of the blade, the blade is connected with the knife handle, and the working end of the cutting edge faces towards the knife handle;
the head end of the blade is provided with a groove, the tail end of the blade is provided with an installation groove, and the cross section of the blade is of an arc groove structure;
the included angle A between the cutting edge and the horizontal plane is 65-85 degrees;
the included angle I between the knife handle and the horizontal plane is 45-75 degrees;
the distance F between the cutting edge of the blade and the mounting groove is 35-45 mm;
the width B of the blade is 7.5 mm-8.5 mm;
the included angle E between the two sides of the blade and the horizontal plane is 8-12 degrees;
the front end of the knife handle is provided with a bulge matched with the mounting groove at the tail end of the blade.
Preferably, the included angle A between the cutting edge and the horizontal plane is 80 degrees, and the width B of the blade is 8 mm.
Preferably, the included angle I between the tool shank and the horizontal plane is 60 degrees
Preferably, the distance C between the head end of the blade and the cutting edge is 10mm, the thickness of the blade is 2mm, and the included angle E between the two sides of the blade and the horizontal plane is 10 degrees.
Preferably, the distance F between the cutting edge of the blade and the mounting groove is 40 mm.
Preferably, the total height G of the cutting edge is 5mm, and the thickness H of the cutting edge is 3 mm.
Preferably, the included angle between the tail end of the cutter handle and the front of the horizontal plane is 60 degrees, and the length J of the installation groove is 15 mm.
Preferably, the grooves at the head ends of the cutter handle and the blade are both provided with anti-skid lines.
The utility model has the advantages that:
the utility model discloses simple structure, convenient to use adopts the utility model discloses a scalpel can reduce the operation incision for the transverse carpal ligament respectively not more than 1 cm's little incision of the far and near-end of transverse carpal ligament to the thorough incision transverse carpal ligament of controllability, maximum degree protection subcutaneous tissue bleed still less, the easy and simple safety of operation, alleviate the acute and chronic painful degree of patient's postoperative wound, promote early recovery, the scar is littleer more hidden, pleasing to the eye, improves curative effect and patient satisfaction.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the blade structure of the present invention.
Fig. 3 is a left side view of the blade of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 is the schematic view of the structure of the knife handle of the utility model.
Fig. 6 is a front view of the knife handle of the present invention.
Fig. 7 is a schematic view of the incision of the transverse ligament of the palm wrist of the present invention.
Fig. 8 is a partial schematic view of the blade of the present invention.
Detailed Description
Referring to fig. 1 to 8, a transverse carpal ligament incision knife comprises a blade 1, a blade 2 and a handle 3, wherein the blade 2 is connected to the upper part of the blade 1, the blade 1 is connected with the handle 3, and the working end of the blade 2 faces the handle 3;
the head end of the blade 1 is provided with a groove 10, the tail end of the blade 1 is provided with a mounting groove 11, and the cross section of the blade 1 is of an arc groove structure;
the included angle A between the cutting edge 2 and the horizontal plane is 65-85 degrees;
the included angle I between the knife handle 3 and the horizontal plane is 45-75 degrees;
the distance F between the cutting edge 2 and the mounting groove 11 in the blade 1 is 35-45 mm;
the width B of the blade 1 is 7.5 mm-8.5 mm;
the included angle E between the two sides of the blade 1 and the horizontal plane is 8-12 degrees;
the front end of the knife handle 3 is provided with a bulge matched with the mounting groove 11 at the tail end of the blade 1.
Preferably, the included angle A between the cutting edge 2 and the horizontal plane is 80 degrees, and the width B of the blade 1 is 8 mm.
Preferably, the included angle I between the tool shank 3 and the horizontal plane is 60 degrees
Preferably, the distance C between the head end of the blade 1 and the cutting edge 2 is 10mm, the thickness D of the blade 1 is 2mm, and the included angle E between the two sides of the blade 1 and the horizontal plane is 10 degrees.
Preferably, the distance F between the cutting edge 2 and the mounting groove 11 in the blade 1 is 40 mm.
Preferably, the total height G of the cutting edge 2 is 5mm, and the thickness H of the cutting edge is 3 mm.
Preferably, the included angle between the tail end of the cutter handle 3 and the front of the horizontal plane is 60 degrees, and the length J of the mounting groove 11 is 15 mm.
Preferably, the groove 10 at the head end of the blade 1 and the handle 3 are both provided with anti-skid lines.
The working principle and the using process of the embodiment are as follows:
the utility model discloses patient's routine anesthesia during the use, tie up the tourniquet, disinfect, spread aseptic operation list, the upper limbs abduction is arranged in the operating table, gets near-end and indulges about 1cm incision with near-edge interstellar striation when wrist striation, palm longissimus tendon ulnar side transverse movement about 1cm incision, distal end ring finger bend position.
Incise skin and subcutaneous with ordinary scalpel blade, expose the deep ligament, protect the deep tissue, incise partial ligament, as required or art person's custom hand direction, recess 10 department with the setting of 1 head end of vascular forceps centre gripping scalpel blade is with scalpel blade 1 from distal end or the propelling movement of ligament below in the near-end incision, make the mounting groove 11 of scalpel blade 1 reach another incision, be connected scalpel blade 1 with the arch of 3 head ends of handle of a knife through mounting groove 11, through push-and-pull handle of a knife 3, continuously assist with 10 departments of vascular forceps centre gripping scalpel blade simultaneously and maintain horizontal propulsion direction, make cutting edge 2 can cut the transverse carpal ligament, through the thickness that recess 10 departments and 3 push-and-pull cooperation flagging ascending dynamics with the vascular forceps centre gripping scalpel blade were cut. If the ligament is not completely cut at one time, the actions can be repeated, the knife handle 3 is separated from the blade 1, the direction of the blade 1 is selected, the blade 1 is placed and the knife handle 3 is connected according to the requirement of cutting the ligament part, the pushing and cutting are carried out again until the transverse carpal ligament is completely cut, the knife handle 3 and the surgical blade 1 are separated, and the surgical blade 1 is taken out.
Firstly, because the shortest distance between two selected notches is about 35-45 mm, in order to ensure that the blade 1 is placed below the tough belt through the notch at one end and the mounting groove 11 can be fully exposed to the notch at the other end so as to be conveniently and accurately mounted with the handle 3, and the whole cutting process along with pushing the handle 3 and the blade 2 is controllable and accurate, the distance F between the blade 2 and the mounting groove 11 in the blade 1 is designed to be 35-45 mm. Secondly, considering good passing performance, required bending resistance and feasibility of integral casting molding of the additional cutting edge 2 when the blade 1 is placed from a small cut, the width of the blade 1 is designed to be 7.5 mm-8.5 mm, in order to avoid damages such as traction and cutting caused by the fact that the deep tendon nerves are clamped into the cutting edge by friction connecting belts in the process of placing and pushing the incised ligament of the blade 1, the cross section of the blade 1 is designed to be an arc groove structure, an included angle E between two sides of the blade 1 and a horizontal plane is 8-12 degrees, and chamfering processing is carried out on the edge. In addition, through a large amount of autopsy studies and clinical practice observations of traditional open surgery, the thickness of the increased transverse carpal ligament is generally 3-5mm, the transverse carpal ligament is tough, and in order to prevent the blade from being too thin, the cutting effect is poor, the process is difficult to realize, foreign matter residues are caused by fracture, the blade needs to be taken out through the open surgery, and even medical disputes are possible, the blade 2 is designed to have an included angle A between the blade 2 and the horizontal plane of 65-85 degrees, a height G of 5mm and a thickness H of 3 mm. Finally, considering the requirement that the knife handle has a certain included angle with the horizontal plane to avoid the obstruction of limbs in the horizontal direction in the blade pushing process and the convenience and habitual angle of the surgeon using other similar surgical instruments, the included angle I between the knife handle 3 and the horizontal plane is 45-75 degrees.
Claims (8)
1. A transverse carpal ligament incision knife is characterized in that: the cutting tool comprises a blade (1), a cutting edge (2) and a tool handle (3), wherein the cutting edge (2) is connected to the upper part of the blade (1), the blade (1) is connected with the tool handle (3), and the working end of the cutting edge (2) faces towards the tool handle (3);
the head end of the blade (1) is provided with a groove (10), the tail end of the blade (1) is provided with a mounting groove (11), and the cross section of the blade (1) is of an arc groove structure;
the included angle A between the cutting edge (2) and the horizontal plane is 65-85 degrees;
the included angle I between the knife handle (3) and the horizontal plane is 45-75 degrees;
the distance F between the cutting edge (2) and the mounting groove (11) in the blade (1) is 35-45 mm;
the width B of the blade (1) is 7.5-8.5 mm;
the included angle E between the two sides of the blade (1) and the horizontal plane is 8-12 degrees;
the front end of the knife handle (3) is provided with a bulge matched with the mounting groove (11) at the tail end of the blade (1).
2. A transverse carpal ligament incision knife as in claim 1, wherein: the included angle A between the cutting edge (2) and the horizontal plane is 80 degrees, and the width B of the blade (1) is 8 mm.
3. A transverse carpal ligament incision knife as in claim 1, wherein: the included angle I between the knife handle (3) and the horizontal plane is 60 degrees.
4. A transverse carpal ligament incision knife as in claim 1, wherein: the distance C between the head end of the blade (1) and the cutting edge (2) is 10mm, the thickness of the blade (1) is 2mm, and the included angle E between the two sides of the blade (1) and the horizontal plane is 10 degrees.
5. A transverse carpal ligament incision knife as in claim 1, wherein: the distance F between the cutting edge (2) and the mounting groove (11) in the blade (1) is 40 mm.
6. A transverse carpal ligament incision knife as in claim 1, wherein: the total height G of the cutting edge (2) is 5mm, and the thickness H of the cutting edge is 3 mm.
7. A transverse carpal ligament incision knife as in claim 1, wherein: the included angle between the tail end of the knife handle (3) and the front of the horizontal plane is 60 degrees, and the length J of the mounting groove (11) is 15 mm.
8. A transverse carpal ligament incision knife as in claim 1, wherein: the anti-skid thread is arranged on the knife handle (3) and in the groove (10) at the head end of the blade (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417357.4U CN210843336U (en) | 2019-08-29 | 2019-08-29 | Transverse carpal ligament incision knife is exclusively used in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417357.4U CN210843336U (en) | 2019-08-29 | 2019-08-29 | Transverse carpal ligament incision knife is exclusively used in |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210843336U true CN210843336U (en) | 2020-06-26 |
Family
ID=71294568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417357.4U Expired - Fee Related CN210843336U (en) | 2019-08-29 | 2019-08-29 | Transverse carpal ligament incision knife is exclusively used in |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210843336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403680A (en) * | 2019-08-29 | 2019-11-05 | 吉林大学 | One kind being exclusively used in ligamentum carpi transversum incision knife |
-
2019
- 2019-08-29 CN CN201921417357.4U patent/CN210843336U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403680A (en) * | 2019-08-29 | 2019-11-05 | 吉林大学 | One kind being exclusively used in ligamentum carpi transversum incision knife |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 |