Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/32—Surgical cutting instruments
  • A61B17/3209—Incision instruments
  • A61B17/3211—Surgical scalpels, knives; Accessories therefor
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/32—Surgical cutting instruments
  • A61B17/3209—Incision instruments
  • A61B17/3211—Surgical scalpels, knives; Accessories therefor
  • A61B17/3213—Surgical scalpels, knives; Accessories therefor with detachable blades
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/32—Surgical cutting instruments
  • A61B17/3209—Incision instruments
  • A61B17/3211—Surgical scalpels, knives; Accessories therefor
  • A61B2017/32113—Surgical scalpels, knives; Accessories therefor with extendable or retractable guard or blade
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
  • A61B90/08—Accessories or related features not otherwise provided for
  • A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
  • A61B90/70—Cleaning devices specially adapted for surgical instruments

Definitions

• the present invention relates to a medical hand instrument
• a scalpel with a preferably one-piece handle, which has a handle-side positioning element, preferably a detent-free positioning projection, on its distal end section, an exchangeable tool arranged on the handle, preferably a blade, which has a tool-side positioning element, preferably a positioning recess or opening , in which the handle-side positioning element engages substantially precisely, and a locking slide which is displaceable in a longitudinal direction of the handle relative to the handle and at least partially encompasses the handle.
• a handle-side positioning element preferably a detent-free positioning projection
• Scalpels of this type are already known from the prior art, in which manual force must be applied to the blade in order to assemble or disassemble the blade on the handle.
• GB 265 425 A shows a scalpel with a scalpel handle which has two guide rails on the side at a distal end section for receiving a scalpel blade. The scalpel blade is pushed on or pulled off for assembly and disassembly.
• US 2 708 313 A discloses a scalpel in which the
• Scalpel blade is fixed or released on the handle by a rotating movement.
• a scalpel with a scalpel blade that can be assembled or disassembled by exerting manual force on the blade is given in DE 10 2009 007 292 A1 disclosed.
• the scalpel blade and the scalpel handle each have coupling elements which fix the scalpel blade on the scalpel handle by means of non-positive and / or positive engagement with one another.
• Disassembly of the scalpel blade can be exerted on this one hand force. There is a risk that a user can slip off both when joining and when removing the scalpel blade and injure himself in the process. This increases the risk of infection for the user, especially when removing the soiled or contaminated scalpel blade after surgical use.
• Scalpel blade allows. However, impurities can collect in the swivel joint formed here between the scalpel blade and the scalpel handle, which makes cleaning the scalpel more difficult.
• EP 2 752 275 A also shows a further scalpel with possible assembly and disassembly of the scalpel blade without exerting manual force.
• the scalpel blade is placed on the scalpel handle, so that a fixed and a movable bolt on the handle in a slot-shaped recess in the
• the recess is essentially two
• the sliding mechanism as a slide arranged in the handle makes cleaning the scalpel more difficult.
• a scalpel in which the scalpel blade can be assembled or disassembled without exerting manual force on it, is disclosed in US Pat. No. 1,625,778.
• the scalpel handle has a main body and a pivot arm that can be pivoted relative thereto.
• the scalpel blade is inserted into the main body and held by the swivel arm.
• a ring on the scalpel handle that is displaceable relative to the scalpel handle is moved in the direction of the scalpel blade. Since the ring completely surrounds the scalpel handle and essentially rests against it, there is a risk when cleaning the scalpel that the area between the ring and the scalpel cannot be rinsed or cleaned, or only poorly.
• a scalpel blade needs to be usable
• the surgical staff To be able to use the scalpel handle with the scalpel blade in one operation, the surgical staff must first mount it on the scalpel handle. In the case of the above-mentioned scalpel handles, this usually requires direct manual force on the blade.
• the soiled blade (soiled with blood and tissue residues) can be disposed of after use, it must be removed from the handle. Both the joining and the removal of the blade represent a high risk of injury for the user, since the user can quickly slip off and cut himself during both processes.
• Hand instrument in particular a scalpel, with a blade and a handle
• a scalpel handle with a blade receiving section on which a blade-positioning element is arranged which cooperates with the blade (latching or snapping-free). Furthermore, a preferably sleeve-shaped (or clamp-like) safety slide is mounted on the scalpel handle in a longitudinally displaceable manner, which in a
• Safety slide can be pushed (back) out of the fixing position into a release or cleaning position, in which the blade (because it does not snap in) is easily removed from the
• the scalpel handle also preferably has a handle thickness (handle thickness) that is reduced compared to the blade receiving section, which results in a rinsing or cleaning gap between the scalpel handle and the safety slide.
• the securing sleeve / securing slide can preferably have at least one fixing knob protruding towards the handle and the handle can have at least one guide longitudinal groove leading the at least one fixing knob in the longitudinal direction of the handle.
• the handle can be at its distal end portion, i. in the
• Blade receiving section furthermore, have a bevel or ramp which slopes down in the proximal direction.
• the blade can thus hold the at least one fixing knob when the safety slide is moved in the direction of the fixing position, increasingly press against the handle, in particular against the incline or ramp. This can ensure that the blade and the fixing knob only come into contact with the blade in the fixing position, which ensures precise alignment of the blade even during the sliding movement.
• the locking sleeve / locking slide can have a spring steel plate / spring tongue which, in the fixing position, engages in a spring steel plate groove formed on the handle to secure the locking plate against further displacement in the distal direction.
• the handle can have a tapered section on its proximal end section, the extent of which in the longitudinal direction of the handle is essentially a length of
• Locking sleeve / locking slide corresponds, so that between the
• Locking sleeve and the handle a gap is formed when the locking sleeve is in the cleaning position. This can ensure that a cleaning liquid can completely wash around the handle and the locking sleeve and the scalpel can be mechanically processed and properly cleaned.
• the handle-side positioning element can engage in the tool-side positioning element without latching or snapping.
• the blade-side positioning element can be designed in the form of an elongated hole, the width of which preferably changes in steps from a first width to a second width. This ensures compatibility with conventional scalpel handles. According to an advantageous development, the
• Locking sleeve / locking slide have a large number of knobs on their outside, which improves the feel of the scalpel by preventing the
• FIG. 1 is a front perspective view of a scalpel in accordance with a preferred embodiment of the present disclosure in a fixing position;
• FIG. 2 is a rear perspective view of the scalpel according to the preferred embodiment of the present disclosure in the fixing position;
• FIG. 3 is a front perspective view of the scalpel according to FIG.
• FIG. 4 is a front perspective view of a scalpel handle in accordance with the preferred embodiment of the present disclosure.
• FIG. 5 is a rear perspective view of the scalpel handle in accordance with the preferred embodiment of the present disclosure.
• FIG. 6 is a front perspective view of a tab washer in accordance with the preferred embodiment of the present disclosure.
• FIG. 7 is a partial view of a blade receiving area of the scalpel in accordance with the preferred embodiment of the present disclosure.
• 8 is a partial side view of the blade receiving area of the scalpel in accordance with the preferred embodiment of the present disclosure.
• Figures 1 and 2 are front and rear perspective views of a scalpel
• the scalpel 1 in a fixing position.
• the scalpel 1 has a scalpel handle 2, a scalpel blade 3 releasably fastened to the scalpel handle 2, and a locking plate (locking slide) 4 used to fix the scalpel blade 3.
• the scalpel handle 2 is designed essentially as an elongated, flat cuboid body, at its distal end section (blade-side end) a blade receiving section 5 tapering towards the distal end section for receiving the scalpel blade 3 is trained. At the blade receiving section 5 protrudes on a flat side of the handle
• this positioning projection 6 is designed in such a way that it essentially fits precisely, preferably without an undercut in the insertion direction, into one formed in the scalpel blade 3
• Positioning recess / positioning groove 7 engages so that the scalpel blade 3 through
• Scalpel handle 2 can be aligned.
• the positioning recess 7 is designed in the shape of a slot, the width of the slot-shaped positioning recess 7 extending towards the tip of the scalpel blade 3
• the positioning projection 6 is shaped in order to achieve a fit with the positioning recess 7 with as little play as possible.
• two guide grooves 8 each extending in the longitudinal direction of the scalpel handle are formed on both flat sides of the scalpel handle 2.
• the scalpel handle 2 has a ramp-shaped shape in the area of the guide grooves 8
• Tapered section 10 with reduced grip strength which is set off at its distal end by a first shoulder 11 and at its proximal end by a second shoulder 12 from the regular grip strength of the scalpel handle 2, preferably on both sides.
• Fig. 6 the locking plate 4 of the scalpel according to the preferred embodiment is shown in perspective.
• the locking plate 4 is formed from a flat plate, the long sides / longitudinal edges of which are bent over (by 180 °) so that they close the scalpel handle 2 in the area of its central section
• the locking plate 4 is thus displaceable in the longitudinal direction of the scalpel handle relative to the scalpel handle 2.
• the scalpel handle 2 serves as a guide in the area of its central section when the locking plate 4 is displaced.
• the locking plate 4 in the preferred embodiment has four directed towards an inside of the locking plate 4
• knobs 13 which are positioned in the corners of an imaginary rectangle.
• a spring plate (spring tongue) 14 protruding away from the inside of the safety plate 4 and a large number of knobs 15 projecting onto an outside of the safety plate 4 in the center are formed on the locking plate 4 in its proximal end section.
• the knobs 15 improve the haptics and manageability of the scalpel 1 when the locking plate 4 is moved relative to the scalpel handle 2 and thus reduce the risk of the
• the locking plate 4 is designed in such a way that only one of the two long sides / longitudinal edges, as mentioned above, is bent over over the entire length of the locking plate, forming an inner sliding groove.
• the securing plate 4 is only bent over in a proximal end section, but is cut out in an arc shape from the region of the knobs 15 to the distal end section of the securing plate 4.
• the shape of the distal end section of the locking plate 4 essentially follows the shape of the blade receiving section 5 in the fixing position, so that the view of the cutting edge of the scalpel blade 3 is at no point covered by the locking plate 4.
• the locking plate 4 must first be moved in the direction of the proximal end section of the scalpel handle 2 so that the blade receiving section 5 is freely accessible, as shown in FIG. 3.
• the scalpel blade 3 can then be placed laterally on the blade receiving section 5 without the user exerting a Fland force.
• the scalpel blade 3 is aligned such that the positioning projection 6 of the scalpel handle 2 engages / penetrates into the positioning recess 7 of the scalpel blade 3.
• the locking plate 4 is then moved along the scalpel handle 2 into the fixing position in the distal direction.
• the locking plate 4 is through the in the
• the scalpel handle 2 is provided with a bevel or ramp 16 in the area of the blade receiving section 5.
• the surface of the scalpel handle rises towards the distal end section of the scalpel handle 2, so that the guide knobs 13 essentially only in the fixing position with the scalpel blade 3 in a final holding contact occur, whereby an unintentional displacement / slipping of the scalpel blade 3 by the guide knobs 13 can be prevented.
• the latched spring plate 14 is first released again and the locking plate 4 is then moved into the cleaning position.
• the scalpel blade 3 can then without exerting the Fland force on the
• Scalpel blade 3 can be removed by the user.
• the scalpel 1 can be rotated so that the scalpel blade 3 automatically falls off the scalpel handle 2 after the fixation has been released by moving the locking plate 4.
• Locking plate 4 and the scalpel handle 2 create a gap which allows a cleaning fluid to flow into the space between the scalpel handle 2 and locking plate 4. As a result, the cleanability of the scalpel 1 can be increased.
• the scalpel blade 3 is merely placed on the scalpel handle 2 for positioning and is not displaced lengthways (more raised
• the incline / ramp 16 in the scalpel handle 2 clamp the scalpel blade 3 in a resilient manner while the securing sleeve 4 is advanced. This ensures that the scalpel blade 3 cannot become detached from the scalpel handle 2 during use.
• the spring plate 14 can be loosened and the securing sleeve 4 pushed back again in the proximal direction.
• Scalpel blade 3 can easily be removed or ejected.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Heart & Thoracic Surgery (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Surgical Instruments (AREA)
• Knives (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=71111404

Family Applications (1)

Country Status (5)

Cited By (1)

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Citations (11)

Family Cites Families (1)

• 2019
  • 2019-06-25 DE DE102019117076.1A patent/DE102019117076A1/de not_active Withdrawn
• 2020
  • 2020-06-15 WO PCT/EP2020/066498 patent/WO2020260054A1/de not_active Ceased
  • 2020-06-15 EP EP20733920.1A patent/EP3989848B1/de active Active
  • 2020-06-15 ES ES20733920T patent/ES2961511T3/es active Active
  • 2020-06-15 JP JP2021576514A patent/JP7367076B2/ja active Active

Patent Citations (11)

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