CN210749418U - Special single-edge tenosynovium incision knife - Google Patents
Special single-edge tenosynovium incision knife Download PDFInfo
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- CN210749418U CN210749418U CN201921417392.6U CN201921417392U CN210749418U CN 210749418 U CN210749418 U CN 210749418U CN 201921417392 U CN201921417392 U CN 201921417392U CN 210749418 U CN210749418 U CN 210749418U
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- cutting edge
- incision
- tendon sheath
- tenosynovium
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Abstract
The utility model discloses a special single-blade tendon sheath incision knife, which relates to the technical field of hand surgery scalpels and comprises a blade, a cutting edge and a connecting end, wherein the blade is arranged at the upper end of the cutting edge, the tail end of the blade is connected with the connecting end, the working end of the cutting edge faces to the head end of the blade, the cross section of the blade is of an arc groove structure, and the connecting end is provided with a mounting groove; during the use, at first be connected link and scalpel handle, connect the completion back, cut a horizontal incision at the skin of finger tendon sheath top, then utilize the operation tweezers to turn over the skin of incision department upwards, will the utility model discloses a blade head end inserts tendon sheath below, and along finger direction upwards pushing away, the cutting edge will make patient's tendon sheath incision, makes the wicresoft.
Description
Technical Field
The utility model relates to a hand surgery scalpel technical field, in particular to are exclusively used in single-blade tendon sheath incision sword.
Background
In the prior art, when cutting a narrow tendon sheath of a hand, a common scalpel is adopted to take a transverse incision before the skin of a finger on the middle surface of the tendon sheath, the skin and the subcutaneous part are cut, the tendon sheath is exposed, and then the longitudinal narrow tendon sheath is cut towards the far end and the near end respectively by the scalpel.
Disclosure of Invention
The utility model aims to open the skin and the subcutaneous part and expose the tendon sheath by adopting a common scalpel to get a transverse incision on the finger skin on the surface of the middle part of the tendon sheath when cutting the narrow tendon sheath of the hand in the prior art, then the scalpel is used for cutting the longitudinal narrow tendon sheaths towards the far end and the near end respectively, and the small incision is exposed to a limited extent, the assistant experience of the operator is insufficient, and the knife edge of the common scalpel is longer, the skin is cut while the tendon sheaths are cut in a hidden way and longitudinally in a limited visual field, so that the originally designed transverse standard incision along dermatoglyph becomes a cross-shaped structure 'wrong' incision, meanwhile, the scalpel special for the single-blade tendon sheath is provided, which has the risks of tendon injury caused by longitudinal tendon cleavage, adhesion increase and accidental injury of neurovascular bundles, and causes scar pain, even contracture, tendon adhesion blocking and pressing recurrence, unattractive wound and even medical disputes of postoperative incisions.
A special single-edge tenosynovium incision knife comprises a blade, a cutting edge and a connecting end, wherein the blade is arranged at the upper end of the cutting edge, the tail end of the blade is connected with the connecting end, and the working end of the cutting edge faces to the head end of the blade;
the cross section of the blade is of an arc groove structure;
the connecting end is provided with an installation groove;
the included angle E between the connecting end and the horizontal plane is 50-70 degrees;
the width A of the blade is between 4.5mm and 5.5 mm;
the included angle B between the two sides of the blade and the horizontal plane is 8-12 degrees;
the height F of the blade is 2.5 mm-3.5 mm;
the included angle G between the cutting edge and the horizontal plane is 75-85 degrees.
Preferably, the blade width a is 5 mm.
Preferably, the included angle E between the connecting end and the horizontal plane is 60 °.
Preferably, the distance between the cutting edge and the head end C of the blade is 5 mm.
Preferably, the included angle B between the two sides of the blade and the horizontal plane is 10 degrees.
Preferably, the distance between the cutting edge and the blade end D is 20 mm.
Preferably, the height F of the blade edge is 3 mm.
Preferably, the included angle G between the blade edge and the horizontal plane is 80 degrees.
Preferably, the width H of the blade is 1 mm.
The utility model has the advantages that:
the utility model discloses simple structure, the cooperation is original ordinary scalpel handle of a knife and is used, safe, effectual incision tendon sheath, will standardize the improper cutting of horizontal incision and become "mistake" incision problem of similar "ten" word, has got rid of tendon nerve vascular injury's potential risk simultaneously when having solved original scalpel blade and using, avoid wrong vertical incision to cause the medical dispute that numb, activity limited etc. that scar contracture, pain and tendon nerve injury adhesion lead to.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a left side view of the blade of the present invention.
Detailed Description
Referring to fig. 1 to 4, a special single-edge tenosynovitis incision knife comprises a blade 1, a blade 2 and a connecting end 3, wherein the blade 1 is arranged at the upper end of the blade 2, the tail end of the blade 1 is connected with the connecting end 3, and the working end of the blade 2 faces the head end of the blade 1;
the cross section of the blade 1 is of an arc groove structure;
the connecting end 3 is provided with a mounting groove 4;
the included angle E between the connecting end 3 and the horizontal plane is 50-70 degrees;
the width A of the blade 1 is between 4.5mm and 5.5 mm;
the included angle B between the two sides of the blade 1 and the horizontal plane is 8-12 degrees;
the height F of the blade 2 is 2.5 mm-3.5 mm.
The included angle G between the cutting edge 2 and the horizontal plane is 75-85 degrees.
Preferably, the width a of the blade 1 is 5 mm.
Preferably, the angle E between the connecting end 3 and the horizontal plane is 60 °.
Preferably, the distance between the cutting edge 2 and the head end C of the blade 1 is 3 mm.
Preferably, the included angle B between the two sides of the blade 1 and the horizontal plane is 10 °.
Preferably, the distance between the cutting edge 2 and the end D of the blade 1 is 15 mm.
Preferably, the height F of the blade 2 is 3 mm.
Preferably, the angle G between the cutting edge 2 and the horizontal plane is 80 °.
Preferably, the width H of the blade is 1 mm.
The utility model discloses a theory of operation and use:
referring to fig. 1 to 4, in use, the mounting groove 4 on the connecting end 3 of the blade 1 is connected with a common scalpel handle, and after the connection is completed. The utility model discloses a tendon sheath splitting method, including getting a horizontal incision along dermatoglyph on the finger skin of tendon sheath middle part surface that is planned to open, open skin and subcutaneous with ordinary scalpel blade, separation show the tendon sheath, with drag hook tractive or vascular forceps part hypodermis tissue, open part tendon sheath about 5mm under the incision with ordinary scalpel blade horizontal, will again the utility model discloses a blade 1 head end is from the tendon sheath breach that opens earlier towards the near end, insert tendon sheath below, tendon sheath shallow, push towards the near end along the tendon sheath direction, cutting edge 2 will open the tendon sheath of near end as required; will again the utility model discloses a blade 1 withdraws from, the head end is from the tendon sheath breach that cuts towards the distal end again, inserts tendon sheath below, tendon shallow face, pushes away along the tendon sheath direction to the distal end, and the distal end tendon sheath is cut as required to cutting edge 2, accomplishes the operation.
Firstly, because of extensive autopsy studies and clinical practice observations of traditional open surgery, it was found that the length of the tendon sheath that normally needs to be cut is typically within 30mm, and the incision along the dermatoglyph and the initial cutting position of the blade 2 that we chose during the surgery are located substantially in the middle of the sheath tube, so D needs to be about 15 mm; meanwhile, about 3mm of C is reserved between the head end of the blade 1 and the cutting edge 2, after the head end of the blade 1 is inserted into a tendon sheath which is partially cut in advance, the blade at the part C is stably clamped by a tendon which is thickened at the deep part and a hyperplastic tendon sheath which is not cut at the shallow layer, so that the controllability of the cutting direction is better, and D + C is about 20mm of the total length of the blade 1.
Secondly, considering good passing performance when the blade 1 is placed in from the tendon sheath cleft, bending resistance required when pushing and cutting and feasibility of integral casting molding of the additional blade 2, and meanwhile, in order to prevent poor cutting effect due to too thin blade, difficulty in process realization, foreign matter residue caused by fracture and even possibility of medical disputes, the width A of the blade 1 is designed to be between 4.5mm and 5.5mm, the blade is designed to be 75-85 degrees in the included angle G between the blade 2 and the horizontal plane, 2.5mm to 3.5mm in the height F of the blade 2 and 1mm in the width H of the blade 2. In order to avoid friction damage to deep tendons in the process of pushing and cutting tendon sheaths by the blade 1, the cross section of the blade 1 is designed to be of an arc groove structure, an included angle B between two sides of the blade 1 and the horizontal plane is 8-12 degrees, and the edge is chamfered.
Finally, the blade 1 is connected with the existing common scalpel handle for use, and the size of the mounting groove 4 refers to the size of a far-end clamping groove of a national standard scalpel handle; meanwhile, the included angle E between the connecting end 3 and the horizontal plane is 50-70 degrees in consideration of the fact that the knife handle needs to form 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 habit angles of using other similar surgical instruments by a surgeon.
Claims (9)
1. The utility model provides a be exclusively used in single-edge tendon sheath incision sword which characterized in that: the cutting blade comprises a blade (1), a cutting edge (2) and a connecting end (3), wherein the blade (1) is arranged at the upper end of the cutting edge (2), the tail end of the blade (1) is connected with the connecting end (3), and the working end of the cutting edge (2) faces to the head end of the blade (1);
the cross section of the blade (1) is of an arc groove structure;
the connecting end (3) is provided with a mounting groove 4;
the included angle E between the connecting end (3) and the horizontal plane is 50-70 degrees;
the width A of the blade (1) is 4.5 mm-5.5 mm;
the included angle B between the two sides of the blade (1) and the horizontal plane is 8-12 degrees;
the height F of the blade (2) is 2.5 mm-3.5 mm;
the included angle G between the cutting edge (2) and the horizontal plane is 75-85 degrees.
2. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the width A of the blade (1) is 5 mm.
3. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the included angle E between the connecting end (3) and the horizontal plane is 60 degrees.
4. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the distance between the cutting edge (2) and the head end C of the blade (1) is 5 mm.
5. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the included angle B between the two sides of the blade (1) and the horizontal plane is 10 degrees.
6. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the distance between the cutting edge (2) and the tail end D of the blade (1) is 20 mm.
7. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the height F of the blade (2) is 3 mm.
8. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the included angle G between the cutting edge (2) and the horizontal plane is 80 degrees.
9. A single-blade tenosynovium incision knife as claimed in claim 1, wherein: the width H of the blade is 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417392.6U CN210749418U (en) | 2019-08-29 | 2019-08-29 | Special single-edge tenosynovium incision knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417392.6U CN210749418U (en) | 2019-08-29 | 2019-08-29 | Special single-edge tenosynovium incision knife |
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| Publication Number | Publication Date |
|---|---|
| CN210749418U true CN210749418U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417392.6U Active CN210749418U (en) | 2019-08-29 | 2019-08-29 | Special single-edge tenosynovium incision knife |
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| Country | Link |
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| CN (1) | CN210749418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110384541A (en) * | 2019-08-29 | 2019-10-29 | 吉林大学 | One kind being exclusively used in single-blade stndon sheath incision knife |
-
2019
- 2019-08-29 CN CN201921417392.6U patent/CN210749418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110384541A (en) * | 2019-08-29 | 2019-10-29 | 吉林大学 | One kind being exclusively used in single-blade stndon sheath incision knife |
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