Method for producing a prosthetic liner and system consisting of prosthetic liner and prosthetic socket
The invention relates to a method for producing a prosthetic liner for insertion into a prosthetic socket, which comprises a receptacle having a distal end and a proximal edge for a residual limb and the prosthetic liner. The method comprises determining a sealing lip contour on the outer face of the prosthetic liner which corresponds to a height contour of the proximal edge of the prosthetic socket, or on the basis of available, known anatomic characteristics of the residual limb and arranging a sealing lip on the outer face of the prosthetic liner along the determined sealing lip contour.
1 . A method for producing a prosthesis liner for use in a prosthesis socket which has a receiving space for a stump and the prosthesis liner, the prosthesis socket having a distal end and a proximal edge, said method comprising:
determining a sealing lip profile on an outer face of the prosthesis liner corresponding to a profile of a height contour or a height and circumferential contour of the proximal edge of the prosthesis socket; and
arranging a single sealing lip on the outer face of the prosthesis liner along the determined sealing lip profile, wherein a proximal edge of the single sealing lip is spaced distally from the proximal edge of the prosthesis socket, and wherein the single sealing lip forms the sealing lip profile in the form of a three-dimensional curve, wherein the prosthesis liner comprises a base body comprising a flexible and elastic material configured to adapt to a shape of the stump, and wherein the single sealing lip, the prosthesis liner, and the prosthesis socket are configured to define a sealed volume comprising an entire volume between the single sealing lip, the prosthesis liner, and the prosthesis socket distal to the single sealing lip when the single sealing lip is inserted into the prosthesis socket, wherein the single sealing lip is arranged at an inclination relative to the base body of the prosthesis liner to form a seal between the base body and the prosthesis socket.
2 . The method as claimed in claim 1 , wherein the height contour of the proximal edge of the prosthesis socket is detected before the sealing lip profile is determined.
3 . The method as claimed in claim 1 , wherein the prosthesis liner is additively manufactured, or wherein the single sealing lip is fixed along the determined sealing lip profile.
4 . The method as claimed in claim 3 , wherein the prosthesis liner is produced in a rapid liquid printing process.
5 . The method as claimed in claim 1 , wherein the single sealing lip is arranged on the prosthesis liner in a manner offset in a distal direction with respect to the proximal edge of the prosthesis socket.
6 . The method as claimed in claim 1 , wherein the profile of the height contour is detected in a proximal-distal direction and/or the profile of a circumferential contour is detected over a circumference of the prosthesis socket.
7 . The method as claimed in claim 1 , wherein the single sealing lip over a circumference of the prosthesis liner is arranged at a same distance in a proximal-distal direction from the proximal edge of the prosthesis socket.
8 . The method as claimed in claim 1 , wherein the single sealing lip is arranged in a sealing lip region which is wider than the single sealing lip and of which a proximal and distal border corresponds to the height contour of the proximal edge of the prosthesis socket.
9 . The method as claimed in claim 8 , wherein the sealing lip region is twice as wide as the single sealing lip at its transition to the base body of the prosthesis liner.
10 . The method as claimed in claim 1 , wherein the height contour or the height and circumferential contour of the prosthesis socket is detected optically, a digital 3D model is created, and the sealing lip profile or the sealing lip profile and a sealing lip height is determined as a function of the detected height contour or of the detected circumferential and height contour.
11 . The method as claimed in claim 10 , wherein the sealing lip height is determined as a function of a detected distance between an inner circumference of the prosthesis socket and an outer circumference of a stump that is to be inserted.
12 . A system comprising a prosthesis socket and a prosthesis liner, wherein the prosthesis socket has a receiving space for a stump fitted with the prosthesis liner, the prosthesis socket has a distal end and a proximal edge, the proximal edge of the prosthesis socket has a height contour and a circumferential contour, and at least one sealing lip is formed or determined on an outer face of the prosthesis liner directed toward the prosthesis socket, and wherein a sealing lip profile of the at least one sealing lip corresponds, in a fully inserted state of the prosthesis liner, to a profile of the height contour of the prosthesis socket, wherein a proximal edge of the at least one sealing lip is spaced distally from the proximal edge of the prosthesis socket, and wherein the at least one sealing lip forms the sealing lip profile in a shape of a three-dimensional curve, wherein the prosthesis liner comprises a base body comprising a flexible and elastic material configured to adapt to a shape of the stump, and wherein the at least one sealing lip, the prosthesis liner, and the prosthesis socket define a sealed volume comprising an entire volume between the at least one sealing lip, the prosthesis liner, and the prosthesis socket distal to the at least one sealing lip when the at least one sealing lip is inserted into the prosthesis socket, wherein the sealing lip is arranged at an inclination relative to the base body of the prosthesis liner to form a seal between the base body and the prosthesis socket.
13 . The system as claimed in claim 12 , wherein when the prosthesis liner is in the fully inserted state, the prosthesis socket is designed with a closed wall distally with respect to the at least one sealing lip.
14 . The system as claimed in claim 12 , wherein the prosthesis socket is dimensionally stable.
15 . The system as claimed in claim 12 , wherein the at least one sealing lip is fastened or formed on the base body and has a non-uniform width over a circumference of the prosthesis liner.
16 . The system as claimed in claim 12 , wherein the sealing lip profile does not lie in one plane.
17 . The system as claimed in claim 12 , wherein the sealing lip profile of the at least one sealing lip is designed to correspond to the profile of a height contour of a proximal edge of a prosthesis socket.
18 . A method for producing a prosthesis liner for use in a prosthesis socket which has a receiving space for a stump and the prosthesis liner, the prosthesis socket having a distal end and a proximal edge, the method comprising:
optically detecting a height contour or a height and circumferential contour of the proximal edge of the prosthesis socket;
determining a sealing lip profile on an outer face of the prosthesis liner;
creating a 3D model of the prosthesis liner, wherein the sealing lip profile or the sealing lip profile and a sealing lip height is determined as a function of the height contour or of the circumferential and height contour; and
arranging a sealing lip on the outer face of the prosthesis liner along the determined sealing lip profile in a manner offset in a distal direction with respect to the proximal edge of the prosthesis socket, wherein the sealing lip profile corresponds to the profile of the height contour of the proximal edge of the prosthesis socket, wherein a proximal edge of the sealing lip is spaced distally from the proximal edge of the prosthesis socket, and wherein the sealing lip forms the sealing lip profile in the form of a three-dimensional curve, wherein the prosthesis liner comprises a base body comprising a flexible and elastic material configured to adapt to a shape of the stump, and wherein the sealing lip, the prosthesis liner, and the prosthesis socket are configured to define a sealed volume comprising an entire volume between the sealing lip, the prosthesis liner, and the prosthesis socket distal to the sealing lip when the sealing lip is inserted into the prosthesis socket, wherein the sealing lip is arranged at an inclination relative to the base body of the prosthesis liner to form a seal between the base body and the prosthesis socket.
19 . The method of claim 18 , wherein the sealing lip comprises a single sealing lip.